53508147 93 Physics MCQ and Answers IAS Exam

7/26/2019 53508147 93 Physics MCQ and Answers IAS Exam

1/72

Reflection of Light - Multiple Choice Test

Question 1

Question: Light is a form of energy produced by a ______.

1. luminous object2. transparent object

3. non-luminous object

4. opaque object

1.luminous object2.transparent object3.non-luminous object4.opaque object

Answer: 1

Question 2

Question: An eample for non-luminous object is ___________.

1. a candle

2. the sun

3. an electric bulb

4. the moon

Answer: 4

Question 3

Question: !he phenomenon by "hich the incident light falling on a surface is sent bac# into

the same medium is #no"n as ________.

1. polari$ation

2. reflection

3. refraction

4. absorptionAnswer: 2

Question 4

Question: %hen light is incident on a polished surface ___________ reflection ta#es place.

1. regular

2. irregular

3. diffused

4. normal

Answer: 1

Question 5Question: An object becomes in&isible "hen it undergoes ______ reflection.

1. regular

2. irregular

3. diffused

4. normal

Answer: 1

Question 6

Question: According to the la"s of reflection'

1. i ( r2. i ) r


2/72

3. r ) i

4.

Answer: 1

Question

Question: !he image formed by a plane mirror is al"ays _______.1. real and erect

2. &irtual and erect

3. real and in&erted

4. &irtual and in&erted

Answer: 2

Question !

Question: !he centre of the sphere of "hich the spherical mirror forms a part is called

____________.

1. centre of cur&ature

2. focus

3. pole

4. &erte

Answer: 1

Question "

Question: !he focus of a conca&e mirror is ________.

1. real

2. &irtual

3. undefined

4. at the pole

Answer: 2

Question 1#

Question: A con&erging mirror is #no"n as ________.

1. con&e mirror

2. plane mirror

3. conca&e mirror

4. cylindrical mirror

Answer: 3

Question 11Question: !he relation bet"een the focal length and radius of cur&ature of a mirror is

_______.

1.

2. * + 2 ( f

3. f ( *,2

4. f ( 2 *

Answer: 3


3/72

Question 12

Question: *adius of cur&ature of a conca&e mirror is al"ays _____ to the mirror.

1. parallel

2. perpendicular

3. inclined at

o

4. inclined at 4/o

Answer: 2

Question 13

Question: An image formed by a con&e mirror is al"ays ________.

1. &irtual' erect and diminished

2. &irtual' real and magnified

3. real' in&erted and diminished

4. real' erect and magnified

Answer: 1

Question 14

Question: 0f the image formed by a conca&e mirror is &irtual' erect and magnified' then the

object is placed __________.

1. bet"een the pole of the mirror and the focus

2. beyond the centre of cur&ature

3. at the centre of cur&ature

4. at the focus

Answer: 1

Question 15Question: entists use a _____________ to focus light on the tooth of a patient.

1. conca&e mirror

2. con&e mirror

3. plane mirror

4. cylindrical mirror

Answer: 1

Question 16

Question: An object is placed 1./ m from a plane mirror. o" far is the image from the

person

1. 3 m

2. 1./ m

3. 2 m

4. 1 m

Answer: 1

Question 1

Question: An object placed 2m from a plane mirror is shifted by ./ m a"ay from the

mirror. %hat is the distance bet"een the object and its image

1. 2 m

2. 1./ m3. / m


4/72

4. 3 m

Answer: 3

Question 1!

Question: %hat is the &alue of q in the follo"ing diagram

1. 3o

2. 4/o

3. o

4. o

Answer: 4

Question 1"

Question: %hat is the angle bet"een the incident and reflected rays "hen a ray of light is

incident normally on a plane mirror

1. o

2. 4/o

3. 15o

4.

Answer: 4

Question 2#

Question: 6ame the type of image that can be obtained on a screen.

1. 7irtual

2. *eal

3. i&erging

4. 8on&erging

Answer: 2

Question 21

Question: A ray of light is incident on a plane mirror and the angle of incidence is 2/o.

%hat is the angle of reflection

1.

2. /o

3. o

4. 2/o

Answer: 4


5/72

Question 22

Question: A ray of light is incident on a plane mirror and the angle of reflection is /o.

8alculate the angle bet"een the incident ray and the reflected ray.

1. /o

2. 2/o

3. o

4. 1o

Answer: 4

Question 23

Question: %hich of the follo"ing is used to ma#e a periscope

1. 8onca&e mirror

2. 8on&e mirror

3. 9lane mirror

4. Lens

Answer: 3

Question 24

Question: %hich mirror has a "ider field of &ie"

1. 8on&e mirror

2. 8onca&e mirror

3. 9lane mirror

4. 8ylindrical mirror

Answer: 1

Question 25

Question: !he focal length of a conca&e mirror is 1/ cm. %hat is its radius of cur&ature1. 1/ cm

2. 3 cm

3. :./ cm

4. 4/ cm

Answer: 2

Question 26

Question: !he focal length of a mirror is 1/ cm. 0dentify the type of mirror.

1. 8onca&e mirror 2. 9lane mirror

3. 8on&e mirror

4. 8ylindrical mirror

Answer: 3

Question 2

Question: A ray of light passing through the _______ retraces its path.

1. focus


3. pole

4. &erte


6/72


7/72

Answer: 2

Question 2

Question: !he part of the lens through "hich the ray of light passes "ithout suffering

de&iation is called ________.

1. optical centre2. focus


4. pole

Answer: 1

Question 3

Question: 8on&e lens al"ays gi&es a real image if the object is situated beyond _______.

1. optical centre


3. focus4. radius of cur&ature

Answer: 3

Question 4

Question: 9arallel rays of light entering a con&e lens al"ays con&erge at _______.


2. the principal focus

3. optical centre

4. the focal plane

Question 5Question: %here should an object be placed so that a real and in&erted image of the same

si$e is obtained' using a con&e lens

1. ;et"een < and =

2. At =

3. At 2 =

4. At infinity

Answer: 3

Question 6

Question: >0 unit of the po"er of a lens is ___________.

1. dioptre

2. cm

3. metre

4. "att

Answer: 1

Question

Question: 1 is the po"er of the lens of focal length of ______ cm.

1. 1

2. 1

3. 1,14. 1,1


8/72

Answer: 1

Question !

Question: 0n a simple microscope lens used is __________.

1. bicon&e

2. biconca&e3. plano con&e

4. cylindrical

Answer: 1

Question "

Question: *eciprocal of focal length in metres is #no"n as the ______ of a lens.

1. focus

2. po"er

3. po"er of accommodation

4. far point

Answer: 2

Question 1#

Question: A con&e lens is called _________.

1. con&erging lens

2. di&erging lens

3. both con&erging and di&erging lens

4. refracting lens

Answer: 1

Question 11

Question: A positi&e magnification greater than unity indicates _____________________.

1. real image

2. &irtual image

3. neither real not &irtual image

4. distorted image

Answer: 2

Question 12

Question: !he po"er of a con&e lens of focal length / cm is ______.

1. + 2

2. - 23. /

4. - /

Answer: 1

Question 13

Question: !he focal length of a lens "hose po"er is -1./ is _______.

1. -. cm

2. + 1./ m

3. + . cm

4. -1./ mAnswer: 1


9/72

Question 14

Question: *eal images formed by single con&e lenses are al"ays ________________.

1. on the same side of the lens as the object

2. in&erted

3. erect4. smaller than the object

Answer: 2

Question 15

Question: An object is placed 12 cm from a con&e lens "hose focal length is 1 cm. !he

image must be.

1. &irtual and enlarged

2. &irtual and reduced in si$e

3. real and reduced in si$e

4. real and enlarged

Answer: 4

Question 16

Question: %hen a person uses a con&e lens as a simple magnifying glass' the object must

be placed at a distance.

1. less than one focal length

2. more than one focal length

3. less than t"ice the focal length

4. more than t"ice the focal length

Answer: 1Question 1

Question: !he image produced by a conca&e lens is ________.

1. al"ays &irtual and enlarged

2. al"ays &irtual and reduced in si$e

3. al"ays real

4. sometimes real' sometimes &irtual

Answer: 2

Question 1!

Question: A &irtual image is formed by _______.

1. a slide projector in a cinema hall

2. the ordinary camera

3. a simple microscope

4. telescope

Answer: 3

Question 1"

Question: An object is placed 2/ cm from a con&e lens "hose focal length is 1 cm. !he

image distance is ________ cm.

1. / cm

2. 1. cm3. . cm


10/72

4. 1 cm

Answer: 2

Question 2#

Question: !he least distance of distinct &ision is ______.

1. 2/ cm2. 2/ m

3. .2/ cm

4. 2./ m

Answer: 1

Question 21

Question: A con&e lens has a focal length of 2 cm. 0ts po"er in dioptres is ___________.

1. 2

2. /

3. ./

4. .2

Answer: 2

Question 22

Question: An object is placed before a conca&e lens. !he image formed _____________-.

1. is al"ays erect

2. may be erect or in&erted

3. is al"ays in&erted

4. is al"ays real

Answer: 1

Question 23

Question: A ray of light tra&els from a medium of refracti&e inde n1to a medium of

refracti&e inde n2. 0f angle of incidence is i and the angle of refraction is r.

!hen is equal to

1. n1

2. n2

3. n21

4. n12

Answer: 3Question 24

Question: !"o thin lenses of po"er +/ and -2 are placed in contact "ith each other.

=ocal length of the combination is

1. +3 m

2. -3 m

3. .33 m

4. -.33 m

Answer: 3

Question 25

Question: !he lens formula in cartesian frame is ______________.


11/72

1.

2.

3.

4.

Answer: 3

The %u&$n '(e $n) the Colourful *orl) - Multiple Choice Test

Question 1

Question: !he change in focal length of an eye lens to focus the image of objects at &arying

distances is done by the action of ________.

1. pupil

2. ciliary muscles

3. retina

4. blind spot

Answer: 2

Question 2

Question: =ar point of a normal eye is situated at _________.

1. 2/ cm

2. infinity3. / cm

4. 4 cm

Answer: 2

Question 3

Question: A long-sighted person cannot see objects nearer to his eye than / cm. !o enable

him to read a boo# 2/ cm a"ay' he should use spectacle lenses "hose po"er in dioptres is

____.

1. -

2. -4

3. -2

4. + 4

Answer: 4

Question 4

Question: !he process by "hich a beam of "hite light splits into its constituent colours is

#no"n as _________.

1. reflection

2. dispersion

3. di&ergence

4. con&ergence

Answer: 2


12/72

Question 5

Question: !he band of colours obtained due to dispersion is #no"n as ______________.

1. spectrum

2. rainbo"

3. image4. mirage

Answer:

Question 6

Question: 9o"er of a lens is epressed in

1. dioptre

2. cm

3. metre

4. millimetre

Answer: 1

Question

Question: 1 is the po"er of a lens of focal length ______ cm.

1. 1

2. 1

3. 1,1

4. 1,1

Answer: 1

Question !

Question: ypermetropia is rectified by using

1. con&e lens

2. conca&e lens

3. cylindrical lens

4. progressi&e lens

Answer: 1

Question "

Question: *eciprocal of focal length in metres is #no"n as the ______ of a lens.

1. focus

2. po"er

3. po"er of accommodation4. far point

Answer: 2

Question 1#

Question: !he po"er of a con&e lens of focal length / cm is ______.

1. + 2

2. - 2

3. /

4. - /



13/72

Question: !"o lenses ha&ing po"ers +2 and -4 respecti&ely are put together. 9o"er of

the combination "ould be

1. -2

2. +2

3. -4

4. +4

Answer: 1

Question 12

Question: !he fluid bet"een the retina and the lens is called _______.

1. aqueous humour

2. &itreous humour

3. aqua

4. humus

Answer: 2

Question 13

Question: !"o thin lenses of po"er +/ and -2 are put in contact "ith each other. =ocal

length of the combination is

1. +3 m

2. -3 m

3. .33 m

4. -.33 m

Answer: 3

Question 14

Question: !he least distance of distinct &ision for infants is _________.

1. 1/ cm

2. 2 cm

3. 2/ cm

4. / cm

Answer: 4

Question 15

Question: !he focal length of a lens "hose po"er is -1./ is _______.

1. -. cm

2. + 1./ m

3. + . cm

4. -1./ m

Answer: 1

+oun) - Multiple Choice Test

Question 1

Question: %hen a "a&e tra&els through a medium ______.

1. particles are transferred from one place to another


14/72

2. energy is transferred in a periodic manner

3. energy is transferred at a constant speed

4. none of the abo&e statements is applicable

Answer: 3

Question 2Question: !he minimum distance bet"een the source and the reflector' so that an echo is

heard is approimately equal to ______.

1. 1 m

2. 1: m

3. 34 m

4. / m

Answer: 2

Question 3

Question: ;ats detect the obstacles in their path by recei&ing the reflected ______.

1. infrasonic "a&es

2. radio "a&es

3. electro-magnetic "a&es

4. ultrasonic "a&es

Answer: 4

Question 4

Question: %hen sound tra&els through air' the air particles ______.

1. &ibrate along the direction of "a&e propagation

2. &ibrate but not in any fied direction

3. &ibrate perpendicular to the direction of "a&e propagation4. do not &ibrate

Answer: 1

Question 5

Question: !he relation bet"een "a&e &elocity ?&?' frequency ?f ?' and "a&elength ?l? is

______.

1.

2.

3.

4.

Answer: 2

Question 6

Question: !he frequency of a "a&e tra&elling at a speed of / ms-1is 2/ $. 0ts time

period "ill be ______.

1. 2 s


15/72

2. ./ s

3. 2/ s

4. .4 s

Answer: 4

Question Question: !he amplitude of a "a&e is ______.

1. the distance the "a&e mo&es in one second

2. the distance the "a&e mo&es in one time period of the "a&e

3. the maimum distance mo&ed by the medium particles on either side of the mean position

4. the distance equal to one "a&e length

Answer: 3

Question !

Question: %hich of the follo"ing is not a characteristic of a musical sound

1. 9itch

2. %a&elength

3. @uality

4. Loudness

Answer: 2

Question "

Question: >ound "a&es do not tra&el through

1. solids

2. liquids

3. gases4. &acuum

Answer: 4

Question 1#

Question: !he physical quantity' "hich oscillates in most "a&es' is

1. mass

2. energy

3. amplitude

4. "a&elength


Question: >ound "a&es are

1. longitudinal

2. trans&erse

3. partly longitudinal and partly trans&erse

4. sometimes longitudinal and sometimes trans&erse

Answer: 1

Question 12

Question: !he frequency "hich is not audible to the human ear is

1. / $


16/72

2. / $

3. / $

4. / $

Answer: 4

Question 13Question: !he speed of sound in medium depends upon

1. amplitude

2. frequency

3. "a&elength

4. properties of the medium

Answer: 4

Question 14

Question: %hich of the follo"ing "ill remain unchanged "hen a sound "a&e tra&els in air

or in "ater

1. Amplitude

2. %a&elength

3. =requency

4. >peed

Answer: 3

Question 15

Question: A sound source sends "a&es of 4 $. 0t produces "a&es of "a&elength 2./ m.

!he &elocity of sound "a&es is

1. 1 m,s

2. 1 m,s3. 1 m,s

4. 3 #m,s

Answer: 2

Question 16

Question: !he time period of a &ibrating body is ./ s. !he frequency of "a&es it emits is

1. / $

2. 2 $

3. 2 $

4. 2 $Answer: 2

Question 1

Question: A source of frequency of / $ emits "a&es of "a&elength .4 m' ho" long

does the "a&es ta#e to tra&el m

1. 3 s

2. s

3. s

4. 12 s

Answer: 1

Question 1!


17/72

Question: >ound and light "a&es both

1. ha&e similar "a&elength

2. obey the la"s of reflection

3. tra&el as longitudinal "a&es

4. tra&el through &acuumAnswer: 2

Question 1"

Question: !he method of detecting the presence' position and direction of motion of distant

objects by reflecting a beam of sound "a&es is #no"n as _____.

1. *AA*

2. >peed

2. ass

3. atter

4. Bnergy

Answer: 4


18/72

Question 24

Question: 0f a &ibrator stri#es the "ater 1 times in one second' then the frequency of "a&e

is _________.

1. 1 $

2. ./ $

3. / $

4. .1 $

Answer: 1

Question 25

Question: Cnit of "a&elength is __________.

1. ne"ton

2. erg

3. dyne

4. angstrom

Answer: 4

Question 26

Question: !he distance bet"een a compression and the net rarefaction of a longitudinal

"a&e is __________.

1.

2. 2l

3.

4.

Answer: 3

Question 2

Question: >0 Cnit of time period is __________.

1. second

2. hour

3. minute4. nanosecond

Answer: 1

Question 2!

Question: !he &ibrations or the pressure &ariations inside the inner ear are con&erted into

electrical signals by the_________.

1. cochlea

2. tympanic membrane

3. pinna4. an&il


19/72

Answer: 1

Question 2"

Question: 7ibrations inside the ear are amplified by the three bones namely the _________

in the middle ear.

1. hammer' an&il and stirrup2. hammer' an&il and pinna

3. hammer' cochlea and stirrup

4. auditory bone' an&il and stirrup

Answer: 1

Question 3#

Question: !he persistence of audible sound due to the successi&e reflections from the

surrounding objects e&en after the source has stopped to produce that sound is called

_________.

1. reflection

2. echo3. re&erberation

4. rarefaction

Answer: 3

,orce $n) L$ws f Motion - Multiple Choice Test

Question 1

Question: 0nertia is ________

1. a property of matter

2. a type of force3. the speed of an object

4. none of the abo&e

Answer: 1

Question 2

Question: A and ; are t"o objects "ith masses 1 #g and :/ #g respecti&ely' then

________ .

1. both "ill ha&e the same inertia

2. ; "ill ha&e more inertia

3. A "ill ha&e more inertia

4. both "ill ha&e less inertia

Answer: 3

Question 3

Question: !he resultant of balanced forces is ________

1. non $ero

2. equal to $ero

3. not equal to $ero

4. equal to the acceleration produced in the body

Answer: 2

Question 4


20/72

Question: !he physical quantity' "hich is the measure of inertia' is ________

1. density

2. "eight

3. force

4. massAnswer: 4

Question 5

Question: !he spar#s produced during sharpening of a #nife against a grinding "heel

lea&es the rim of the "heel tangentially. !his is due to ________

1. inertia of rest

2. inertia of motion

3. inertia of direction

4. force applied

Answer: 3

Question 6

Question: !he la" that gi&es a qualitati&e definition of force is ________

1. 6e"ton?s second la" of motion

2. La" of inertia

3. 6e"ton?s third la" of motion

4. La" of gra&itation

Answer: 2

Question

Question: 6ame the property of matter due to "hich a body continues in its state of rest or

uniform motion unless an eternal force acts on it.1. 0nertia

2. Blasticity

3. 7iscosity

4. ensity

Answer: 1

Question !

Question: !he >.0. unit of force is

1. erg

2. joule3. ne"ton

4. dyne

Answer: 3

Question "

Question: %hen a force of 16 acts on a mass of 1#g that is free to mo&e' the object mo&es

"ith

1. a speed of 1 m,s

2. a speed of 1 #m,s

3. an acceleration 1 m,s2

4. an acceleration of 1 m,s2

Answer: 4


21/72

Question 1#

Question: !he acceleration in a body is due to

1. balanced force

2. unbalanced force

3. mass4. electrostatic force

Answer: 2

Question 11

Question: %hen an object undergoes acceleration

1. its speed al"ays increases

2. its &elocity al"ays increases

3. it al"ays falls to"ards the Barth

4. a force al"ays acts on it

Answer: 4

Question 12

Question: A force of 1 6 is acting on an object of mass 1 #g. %hat is the acceleration

produced in it

1.

2.

3. 1 m,s2

4. 1 m,s

Answer: 1

Question 13

Question: %hat is the force acting on an object of mass 1 #g mo&ing "ith a uniform

&elocity of 1 m,s

1. 1 6

2. 1 6

3.

4. 1 6

Answer: 3

Question 14

Question: An athlete can ta#e a longer jump if he comes running from a distance as

compared to that "hen he jumps suddenly. 0dentify the type of inertia.1. 0nertia of rest

2. 0nertia of motion

3. 0nertia of direction

4. 0nertia of position

Answer: 2

Question 15

Question: 1 ne"ton ( ________

1.

2.


22/72

3.

4.

Answer: 2

Question 16

Question: !he physical quantity' "hich is equal to change in momentum' is

1. force

2. impulse

3. acceleration

4. &elocity

Answer: 2

Question 1

Question: !he physical quantity' "hich is equal to rate of change of momentum' is

1. displacement

2. acceleration3. force

4. impulse

Answer: 3

Question 1!

Question: 1#g m,s ( _________.

1. 1 6 s

2. 1 6

3. 1 6 m

4. 1 6 sAnswer: 1

Question 1"

Question: An eample for a &ector quantity is __________

1. speed

2. momentum

3. distance

4. length

Answer: 2

Question 2#

Question: 0mpulse ( _________.

1.

2.

3.

4.

Answer: 2

Question 21

Question: >0 unit of impulse is ___________.

1.6 s6 s


23/72

2. 6 s2

3.

4.

Answer: 1

Question 22

Question: !he momentum of a toy bus of .1 #g mo&ing "ith a &elocity of / m,s is

1. ./ #g m,s

2. ./ #g m,s

3. ./ 6 s

4. ./ #g m,s

Answer: 2

Question 23

Question: !he product of mass and &elocity is #no"n as ____________ .

1. acceleration2. force

3. momentum

4. &elocity

Answer: 3

Question 24

Question: %hat is the momentum of a man of mass 1 #g "hen he "al#s "ith a uniform

&elocity of 2 m,s

1.2. 2 6

3.

4.

Answer: 1

Question 25

Question: !he t"o factors on "hich the momentum of a body depends are ______ and

_________ .

1. &elocity' time

2. mass' "eight3. mass' distance

4. mass'&elocity

Answer: 4

Question 26

Question: !he gra&itational force of earth acting on a body of mass 1 #g is _______.

1. 5. 6

2. .5 6

3. 5 6

4. 1 6

Answer: 2


24/72

Question 2

Question: omentum of a massi&e object at rest is _______.

1. &ery large

2. &ery small

3. $ero4. none of the abo&e

Answer: 3

Question 2!

Question: !he resultant of action and reaction forces is _______.

1. greater than $ero

2. less than $ero

3. $ero

4. none of the abo&e

Answer: 1

*or. $n) 'nerg( - Multiple Choice Test

Question 1

Question: %or# done ( =orce _______

1. distance

2. acceleration

3. &elocity

4. speed

Answer: 1

Question 2

Question: 1 joule ( 1 _______

1. 6 m2

2.

3. 6 m

4. 62m2

Answer: 3

Question 3

Question: %hich form of energy does the flo"ing "ater possess

1. gra&itational energy

2. potential energy

3. electrical energy

4. #inetic energy

Answer: 4

Question 4

Question: A body of mass 2 #g is dropped from a height of 1m. 0ts #inetic energy as it

touches the ground is _______

1. 1. 62. 1. D


25/72

3. 1. #g

4. 1. m

Answer: 2

Question 5

Question: !he unit of po"er is _______1. "att per second

2. joule

3. #ilojoule

4. joule per second

Answer: 4

Question 6

Question: 3:3 "atts ( ______h.p.

1. /

2. 2

3. :4

4.

Answer: 1

Question

Question: A coolie carries a load of / 6 to a distance of 1 m. !he "or# done by him is

1. / 6

2. /' 6m

3.

4. 1,/ 6

Answer: 3

Question !

Question: !he 9.B. of a body at a certain height is 2 D. !he #inetic energy possessed by it

"hen it just touches the surface of the earth is

1. ) 9.B.

2. E 9.B.

3. ( 9.B.

4. cannot be #no"n

Answer: 1

Question "Question: 9o"er is a measure of the _______

1. rate of change of momentum

2. force "hich produces motion

3. change of energy

4. rate of change of energy

Answer: 4

Question 1#

Question: !"o objects of masses 1 1-3#g and 4 1-3#g ha&e equal momentum. %hat is

the ratio of their #inetic energies

1. 4F1


26/72

2. 2F1

3. 1F1

4.

Answer: 1

Question 11Question: A 4 ne"ton object is released from a height of 1 m. Dust before it hits the

ground' its #inetic energy' in joules is _______

1. 4

2. 32

3. 25

4. 4

Answer: 1

Question 12

Question: 0f the speed of an object is doubled then its #inetic energy is _______

1. doubled

2. quadrupled

3. hal&ed

4. tripled

Answer: 2

Question 13

Question: 1./ #% ( ______ "atts

1. 1/

2. 1/

3. 1/

4. 1/

Answer: 1

Question 14

Question: A man of mass / #g jumps to a height of 1 m. is potential energy at the highest

point is Gg ( 1 m,s2H

1. / D

2. D

3. / D

4. DAnswer: 3

Question 15

Question: !he type of energy possessed by a simple pendulum' "hen it is at the mean

position is

1. #inetic energy

2. potential energy

3. potential energy + #inetic energy

4. sound energy

Answer: 1

Question 16


27/72

Question: An iron sphere of mass 3 #g has the same diameter as an aluminium sphere

"hose mass is 1./ #g. !he spheres are dropped simultaneously from a cliff. %hen they are

1 m from the ground' they ha&e the same _______.

1. acceleration

2. momentum

3. potential energy

4. #inetic energy

Answer: 1

Question 1

Question: A 1 #g mass has a #inetic energy of 1 joule "hen its speed is

1. .4/ m,s

2. 1 m,s

3. 1.4 m,s

4. 4.4 m,s

Answer: 3

Question 1!

Question: 0f air resistance is negligible' the sum total of potential and #inetic energies of a

freely falling body _______

1. increases

2. decreases

3. becomes $ero

4. remains the same

Answer: 4

Question 1"Question: 6ame the physical quantity "hich is equal to the product of force and &elocity.

1. "or#

2. energy

3. po"er

4. acceleration

Answer: 3

Question 2#

Question: An object of mass 1 #g has potential energy of 1 joule relati&e to the ground

"hen it is at a height of _______.

1. .12 m

2. 1 m

3. .5 m

4. 32 m

Answer: 1

'lectricit( - Multiple Choice Test

Question 1

Question: %hich of the follo"ing statements does not represent ohm?s la"

1. current , potential difference ( constant


28/72

2. potential difference , current ( constant

3. potential difference ( current resistance

4. current ( resistance potential difference

Answer: 4

Question 2Question: !he unit of current is _____________.

1. ampere

2. "att

3. &olt

4. coulomb

Answer: 1

Question 3

Question: !he potential difference required to pass a current .2 A in a "ire of resistance

2% is ____.

1. 1 7

2. 4 7

3. .1 7

4. 4 7

Answer: 2

Question 4

Question: !he resistance of an electric bulb dra"ing 1.2 A current at . 7 is ___________.

1. ./ %

2. / %

3. .2 %4. 2 %

Answer: 2

Question 5

Question: !he unit of resisti&ity is ____________.

1. ohm

2. ohm , m

3. ohm-m

4. mho

Answer: 3

Question 6

Question: !"o resistances of 1 % and $ero ohm are connected in parallel. !he o&erall

resistance "ill be

1. 1 %

2. / %

3. 2/ %

4. $ero ohm

Answer: 1

Question


29/72

Question: !hree resistors 2 % ' 3 % and 4 % are connected so that the equi&alent resistance

is % . !he resistors are connected _________.

1. all in series

2. all in parallel

3. 2 % and 3 % in parallel and the combination in series "ith 4 %

4. 2 % and 3 % in series and the combination in parallel to 4 %

Answer: 1

Question !

Question: 0n the figure'

1. % ' 3 % and % are in series

2. % and % are in parallel and the combination is in series "ith 3 %

3. 3 % ' % and % are in parallel

4. 3 % ' % are in parallel and % is in series

Answer: 4

Question "

Question: !he resistance across A; is

1. 42. 1

3. 2

4. ./

Answer: 2

Question 1#

Question: %hen a current ?0? flo"s through a resistance ?*? for time ?t? the electrical energy

spent is gi&en by ___________.

1. 0 * t

2. 0

2

* t3. 0 * 2t


30/72

4. 0 2* , t

Answer: 2

Question 11

Question: Iilo"att - hour is the unit of ______________.

1. potential difference2. electric po"er


4. charge

Answer: 3

Question 12

Question: %hen a fuse is rated 5 A' it means _____________.

1. it "ill not "or# if current is less than 5 A

2. it has a resistance of 5 %

3. it "ill "or# only if current is 5 A

4. it "ill melt if current eceeds 5 A

Answer: 4

Question 13

Question: !he de&ice used for measuring potential difference is #no"n as _____________.

1. potentiometer

2. ammeter

3. gal&anometer

4. &oltmeter

Answer: 4

Question 14

Question: !he "or# done in mo&ing a unit positi&e charge across t"o points in an electric

circuit is a measure of ___________.

1. current

2. potential difference

3. resistance

4. po"er


Question: !he potential at a point is 2 7. !he "or# done to bring a charge of ./ 8 from

infinity to this point "ill be ________.

1. 2 D

2. 1 D

3. / D

4. 4 D

Answer: 2

Question 16

Question: Doule , 8oulomb is same as ______________.


31/72

1. "att

2. &olt

3. ampere

4. ohm

Answer: 2Question 1

Question: !he free electrons of a metal _____________.

1. do not collide "ith each other

2. are free to escape through the surface

3. are free to fall into the nuclei

4. are free to mo&e any"here in the metal

Answer: 4

Question 1!

Question: !he path of a free electron in a metal is ___________.

1. parabolic

2. circular

3. a straight line

4. $ig $ag

Answer: 4

Question 1"

Question: eat produced in a current carrying "ire in /s is D. !he same current is passed

through another "ire of half the resistance. !he heat produced in / s "ill be _____________.

1. D

2. 3 D3. 1/ D

4. 12 D

Answer: 2

Question 2#

Question: !he current in a "ire ______________.

1. depends only on the potential difference applied

2. depends only on the resistance of the "ire

3. depends on both resistance and potential difference

4. does not depend on resistance and potential differenceAnswer: 3

Question 21

Question: %hen there is an electric current passing through a "ire' the particles mo&ing are

_____________.

1. electrons

2. protons

3. atoms

4. ions

Answer: 1

Question 22


32/72

Question: A positi&e charge released from rest __________.

1. mo&es to"ards the regions of lo"er potential

2. mo&es to"ards the regions of higher potential

3. mo&es to"ards the regions of equal potential

4. does not mo&e

Answer: 1

Question 23

Question: !hree equal resistances "hen combined in series are equi&alent to % . !heir

equi&alent resistance "hen combined in parallel "ill be __________.

1. 2: %

2. 3 %

3. 51 %

4. 1 %

Answer: 4

Question 24

Question: An battery is used to ________________.

1. maintain a potential difference

2. measure electric current

3. measure electric potential

4. safeguard against short - circuit

Answer: 1

Question 25

Question:


33/72

Question 2!

Question: =or "hich of the follo"ing substances' resistance decreases "ith temperature

1. 8opper

2. 9latinum

3. ercury4. 8arbon

Answer: 4

Question 2"

Question: =our cells each of e.m.f ?B? are joined in parallel to form a battery. !he equi&alent

e.m.f of the battery "ill be _______.

1. 4 B

2. B

3. B , 4

4. B (

Answer: 2

Question 3#

Question: !"o electric bulbs ha&e resistances in the ratio 1F2. 0f they are joined in series'

the energy consumed in them are in the ratio _________.

1. 1F2

2. 2F1

3. 4F1

4. 1F1

Answer: 2Magnetic Efects o Electric Current - Multiple Choice Test

Question 1

Question: A magnetic field line is used to find the direction of

1. south-north

2. a bar magnet

3. a compass needle

4. magnetic field

Answer: 4

Question 2

Question: An electric current passes through a straight "ire in the direction of south to

north. agnetic compasses are placed at points A and ; as sho"n in the figure.


34/72

%hat is your obser&ation

1. !he needle "ill not deflect

2.


35/72

Answer: 1

Question 6

Question: A soft iron bar is introduced inside a current carrying solenoid. !he magnetic

field inside the solenoid

1. "ill become $ero

2. "ill decrease

3. "ill increase

4. "ill remain unaffected

Answer: 3

Question 7

Question: !he direction of the force on a current-carrying "ire placed in a magnetic field

depends on

1. the direction of the current

2. the direction of the field

3. the direction of current as "ell as field

4. neither the direction of current nor the direction of field

Answer: 3

Question 8

Question: !he direction of induced curent is obtained by

1. =leming?s left-hand rule

2. a"ell?s right-hand thumb rule

3. Ampere?s rule

4. =leming?s right-hand rule

Answer: 4

Question

Question: %ho first disco&ered the relationship bet"een electricity and magnetism

1. =araday

2. 6e"ton

3. a"ell

4.


36/72

Answer: 4

Question 1!

Question: 0n an electric motor' the energy transformation is from

1. electrical to chemical

2. chemical to light

3. mechanical to electrical

4. electrical to mechanical

Answer: 4

Question 11

Question: A commutator changes the direction of current in the coil of

1. a 8 motor

2. a 8 motor and an A8 generator

3. a 8 motor and a 8 generator

4. an A8 generator

Answer: 3

Question 12

Question: %hich of the follo"ing de&ices "or#s on the principle of electromagnetic

induction

1. Ammeter

2. 7oltmeter

3. Jenerator

4. Jal&anometer

Answer: 3

Question 13

Question: A de&ice used for measuring small currents due to changing magnetic field is

#no"n as

1. gal&anometer

2. ammeter

3. &oltmeter

4. potentiometer


37/72

Answer: 1

Question 14

Question: An electric generator actually acts as

1. source of electric charge

2. source of heat energy

3. an electromagnet

4. a con&erter of energy

Answer: 4

Question 15

Question: Blectromagnetic induction is the

1. charging of a body "ith a positi&e charge

2. production of current by relati&e motion bet"een a magnet and a coil

3. rotation of the coil of an electric motor

4. generation of magnetic field due to a current carrying solenoid

Answer: 2

Question 16

Question: =or ma#ing a strong electromagnet' the material of the core should be

1. soft iron

2. steel

3. brass

4. copper

Answer: 1

Question 17

Question: agnetic field inside a long solenoid carrying current is

1. same at all points GuniformH

2. different at poles and at the centre

3. $ero

4. different at all points

Answer: 1

Question 18


38/72

Question: Kou ha&e a coil and a bar magnet. Kou can produce an electric current by

1. mo&ing the magnet but not the coil

2. mo&ing the coil but not the magnet

3. mo&ing either the magnet or the coil

4. using another 8 source

Answer: 3

Question 1

Question: %hich of the follo"ing describes the common domestic po"er supplied in 0ndia

1. 22 7' 1 $

2. 22 7' / $

3. 11 7' 1 $

4. 1 7' / $

Answer: 2

Question 2!

Question: A fuse in an electric circuit acts as a

1. current multiplication

2. &oltage multiplication

3. po"er multiplier

4. safety de&ice

Answer: 4

Question 21

Question: !he magnetic lines of force inside a current carrying solenoid are

1. along the ais and parallel to each other

2. perpendicular to the ais and parallel to each other

3. circular and do not intersect each other

4. circular and intersect each other

Answer: 1

Question 22

Question: %hen the main s"itch of the house is put off' it disconnects

1. li&e "ire


39/72

2. neutral "ire

3. earth "ire

4. li&e and neutral "ires

Answer: 4

Question 23

Question: Iilo"att-hour is the unit of

1. potential difference

2. electric po"er


4. charge

Answer: 3

Question 24

Question: %hen a fuse is rated 5A' it means

1. it "ill not "or# if current is less than 5A

2. it has a resistance of 5

3. it "ill "or# only if current is 5A

4. it "ill burn if current eceeds 5A

Answer: 4

"ra#itation - Multiple Choice Test

Question 1

Question: >0 unit of gra&itational constant is __________.

1. 6 m2#g2

2. 6 m2#g-2

3. 6 m2s-2

4. 6 m#g-2

Answer: 2

Question 2


40/72

Question: %hat is the &alue of gra&itational constant

1. .:341-116 m2,#g2

2. .:341-16 m2,#g2

3. .:341-116 m,#g2

4. .:341-116 m2,#g

Answer: 1

Question 3

Question: 0f the distance bet"een t"o bodies is doubled' the force of attraction = bet"een

them "ill be _______

1. 1,4 =

2. 2 =

3. 1,2 =

4. =

Answer: 1

Question 4

Question: !he force of gra&itation bet"een t"o bodies in the uni&erse does not depend on

1. the distance bet"een them

2. the product of their masses

3. the sum of their masses

4. the gra&itational constant

Answer: 3

Question 5

Question: 6ame the fundamental force "hich holds the planets in their orbits around the

sun.

1. Jra&itational force of attraction

2. Blectrostatic static force of attraction

3. 6uclear force of attraction

4. Blectro static force of attraction

Answer: 1

Question 6


41/72

Question: %hen an object is thro"n up' the force of gra&ity _________.

1. is opposite to the direction of motion

2. is in the same direction as the direction of motion

3. becomes $ero at the highest point

4. increases as it rises up

Answer: 1

Question 7

Question: %hat is the final &elocity of a body mo&ing against gra&ity "hen it attains the

maimum height

1. ero

2.

3.

4. 2gh

Answer: 1

Question 8

Question: A stone is dropped from a cliff. 0ts speed after it has fallen 1 m is

1. .5 m,s

2. 44.2 m,s

3. 1. m,s

4. 5 m,s

Answer: 2

Question

Question: A ball is thro"n up and attains a maimum height of 1 m. 0ts initial speed "as

1. .5 m,s

2. 44.2 m,s

3. 1. m,s

4. 5 m,s

Answer: 2


42/72

Question 1!

Question: A stone dropped from the roof of a building ta#es 4 seconds to reach the ground.

%hat is the height of the building

1. 1. m

2. 3.2 m

3. 1/.5 m

4. :5.4 m

Answer: 4

Question 11

Question: !he acceleration due to gra&ity is $ero at ______.

1. the equator

2. poles

3. sea le&el

4. the centre of the earth

Answer: 4

Question 12

Question: 0f acceleration due to gra&ity on earth is 1 m,s2then' the acceleration due to

gra&ity on moon is ________.

1. 1. m,s2

2. 1. m,s2

3. 1 m,s2

4. .1 m,s2

Answer: 1

Question 13

Question: !he second equation of motion for a freely falling body starting from rest is

_______.

1.

2.


43/72

3.

4.

Answer: 3

Question 14

Question: !he acceleration due to gra&ity of a body mo&ing against gra&ity is

1. .5 m,s2

2. -.5 m,s2

3.

4. . m,s

Answer: 2

Question 15

Question: A feather and a coin released simultaneously from the same height do not reach

the ground at the same time because of the _______.

1. resistance of the air

2. force of gra&ity

3. force of gra&itation

4. difference in mass

Answer: 1

Question 16

Question: !he "eight of an object of mass 1 #g on earth is_______.

1. .5 6

2. .5 #g

3. 5 6

4. 5 #g

Answer: 3

Question 17

Question: !he "eight of an object of mass 1/ #g at the centre of the earth is _____.

1. 14: 6


44/72

2. 14: #g

3. $ero

4. 1/ 6

Answer: 3

Question 18

Question: ass remains ______ throughout the uni&erse.

1. &aries

2. $ero

3. constant

4. negati&e

Answer: 3

Question 1

Question: >0 unit of "eight is ______.

1. ne"ton

2. #g

3. %t

4. #g."t

Answer: 1

Question 2!

Question: 1 #g."t(________ .

1. 5 6

2. .5 6

3. 1 6

4. .5 6

Answer: 1

Question 21

Question: o" much "ould a man' "hose mass is #g "eigh on the moon

1. .5 6

2. 6

3. 6


45/72

4. 5 6

Answer: 4

Question 22

Question: %hat is the mass of an object "hose "eight on earth is 1 6

1. 2 #g

2. .2 #g

3. 1 #g

4. 2 #g


Question: !he up"ard force acting on an object submerged in a liquid is ______.

1. thrust

2. buoyant force

3. pressure

4. force of friction

Answer: 2

Question 24

Question: !he normal force per unit area is called _______.

1. pressure

2. thrust

3. balanced force

4. pascal

Answer: 1

Question 25

Question: 0f the mass of a ball is / #g on earth' then "hat "ould be its mass on Dupiter

1. / #g

2. / #g

3. 4 #g

4. / #g


46/72

Answer: 1

Motion - Multiple Choice Test

Question 1

Question: 1 #m,h ( _____ m,s

1.

2.

3.

4.

Answer: 1

Question 2

Question: !he distance GsH in metres tra&elled by a particle is related to time GtH in seconds

by the equation of motion -> ( 1t + 4t2. %hat is the initial &elocity of the body

1. 1 m,s

2. m,s

3. 4 m,s

4. 1 m,s2

Answer: 1

Question 3

Question: =or the equation - > ( 1t + 4t2"hat is the acceleration of the body

1. 5 m,s2

2. 1 m,s2

3. 4 m,s2

4. 5 m,s

Answer: 1

Question 4

Question: A body mo&ing along a straight line at 2 m,s decelerates at the rate of 4 m,s2.

After 2 seconds its speed "ill be equal to1. 5 m,s

2. 12 m,s

3. 1 m,s

4. - 12 m,s

Answer: 2

Question 5

Question: Ji&e the equation of motion connecting u' &' a and s "here the symbols ha&e

their usual meaning

1. & ( u + at


47/72

2.

3. &2- u2( 2a>

4.

Answer: 3

Question 6

Question: An object mo&ing "ith a speed of / m,s comes to rest in 1 s' after the bra#es are

applied. %hat is the initial &elocity

1. $ero

2. / m,s

3. 1/ m,s

4. / m,s

Answer: 2

Question Question: A body mo&ing along a straight line at 4 m,s undergoes an acceleration of 4

m,s2. After 1 seconds its speed "ill be

1. 2 m,s

2. 25 m,s

3. 1 m,s

4. 5 m,s

Answer: 4

Question !

Question: >0 unit of acceleration is __________.1.

2.

3.

4.

Answer: 1

Question "

Question: *etardation is __________.

1. negati&e acceleration2. positi&e acceleration

3. uniform acceleration

4. &ariable acceleration

Answer: 1

Question 1#

Question: %hen an object is mo&ing "ith uniform &elocity' "hat is its acceleration

1. $ero

2. uniform3. non-uniform


48/72

4. negati&e

Answer: 1

Question 11

Question: 0n the case of a rectilinear uniform motion' distance-time graph is a

1. parabola2. straight line

3. cur&ed line

4. rectangle

Answer: 2

Question 12

Question: >peed of #m,h "hen epressed in m,s is .

1. 2./

2. 2/

3. 2/

4.

Answer: 2

Question 13

Question: %hen a graph of one quantity &ersus another results in a straight line' the

quantities are .

1. directly proportional

2. constant

3. in&ersely proportional

4. independent of each other

Answer: 1

Question 14

Question: %hat does the follo"ing >-t graph indicate

1. uniform speed

2. body is at rest

3. non-uniform speed

4. &ariable speed

Answer: 2

Question 15

Question: %hat do you infer' if >-t graphs of t"o cyclists meet at a point

1. !hey collide

2. !hey pass each other


49/72

3. !hey are at rest

4. !hey are starting from rest

Answer: 2

Question 16

Question: 6ame the physical quantity "hich "e get from a >-t graph.1. >peed

2. isplacement

3. istance

4. !ime

Answer: 1

Question 1

Question: %hat is the >0 unit of speed

1. #m,h

2. m,s

3. m,min

4. #m,s

Answer: 2

Question 1!

Question: %hat is the distance co&ered by a car in / h if it is mo&ing "ith a speed of 3/

#m,h

1. 1:/ #m

2. 1/ #m

3. : #m

4. 1:/ #m

Answer: 1

Question 1"

Question: !he >-t graph for uniform speed is

1.

2.


50/72

3.

4.

Answer: 2

Question 2#

Question: !he a&erage speed of a car "hich co&ers half the distance "ith a speed of 2 m,s

and other half "ith a speed of 3 m,s in equal inter&als of time is _________.

1. 2/ m,s

2. m,s

3. 24 m,s

4. 2.4 m,s

Answer: 1

Question 21

Question: isplacement is a ________ quantity.

1. scalar

2. &ector

3. deri&ed

4. linear

Answer: 2

Question 22

Question: #m , h2is a unit of ________ .

1. &elocity

2. speed

3. acceleration

4. distance

Answer: 3

Question 23

Question: !he speed-time graph for a particle mo&ing at constant speed is a straight-line

________ to the time ais.1. parallel


51/72

2. perpendicular

3. aligned

4. inclined

Answer: 1

Question 24Question: %hen an object mo&es in a fied direction "ith uniform acceleration' the speed-

time graph is a ________.

1. parabola

2. straight line

3. ellipse

4. cur&e

Answer: 2

Question 25

Question: !he area under the speed-time graph gi&es the ________.

1. distance

2. &elocity

3. time

4. acceleration

Answer: 1

Question 26

Question: A speed of #m,h' epressed in cm s-1is ________.

1. 2./

2. 2/

3. 34.

Answer: 2

Question 2

Question: %hen an object of mass / #g starts from rest' "hat is its initial &elocity

1.

2. - / m,s

3.&ariable

/

4. 1 m,sAnswer: 1

Question 2!

Question: 0dentify the &- t graph representing uniform &elocity.

1.


52/72

2.

3.

4.

Answer: 2

Question 2"

Question: 6ame the physical quantity that is defined as the rate of change of displacement.

1. &elocity

2. acceleration

3. distance

4. speed

Answer: 1

Question 3#

Question: An object mo&es "ith a constant &elocity of .5 m,s' its acceleration in m s-2is

________.

1. .5 m,s2

2. $ero

3. .5 m,s

4. 5 m,s2

Answer: 2

Question 31Question: 0n 12 minutes a car "hose speed is 3/ #m,h tra&els a distance of


53/72

1. : #m

2. 3./ #m

3. 14 #m

4. 25 #m


Question: A body mo&ing along a straight line at 2 m,s undergoes an acceleration of 4

m,s2. After t"o seconds its speed "ill be ________.

1. 5 m,s

2. 12 m,s

3. 1 m,s

4. 25 m,s

Answer: 4

Question 33

Question: A car increases its speed from 2 #m,h to / #m,h in 1 seconds. 0ts acceleration

is ________.

1. 3 m,s2

2. 3 m,s2

3. 15 m,s2

4. .53 m,s2

Answer: 4

Question 34

Question: %hen the distance co&ered by an object is directly proportional to time' it is said

to tra&el "ith ________.1. $ero &elocity

2. constant speed

3. constant acceleration

4. uniform acceleration

Answer: 2

Question 35

Question: 6egati&e acceleration means an object is mo&ing "ith ________ .

1. increasing speed

2. decreasing speed

3. uniform speed

4. constant speed

Answer: 2

Question 36

Question: otion along a straight line is called __________ motion.

1. rectilinear motion

2. circular motion

3. oscillatory motion

4. parabolic

Answer: 1

Question 3


54/72

Question: istance-time graph is a straight line for __________ motion.

1. &ariable

2. non uniform

3. rectilinear

4. circular Answer: 3

Question 3!

Question: A car is mo&ing "ith a speed of 3 #m,h. 0ts speed in m,s is _______.

1. 1

2. 1

3. 2

4. 1

Answer: 1

Question 3"

Question: A car starts from rest and co&ers a distance of 1 m in one second "ith uniform

acceleration. 0ts acceleration is _________.

1. 1 m,s2

2. / m,s2

3. 2 m,s2

4. 1 m,s

Answer: 1

Question 4#

Question: %hich of the follo"ing is a &ector quantity

1. area2. length

3. distance

4. displacement

Answer: 4

Question 41

Question: !he slope of a &-t graph gi&es ________.

1. acceleration

2. &elocity

3. speed4. distance

Answer: 3

Question 42

Question: !he physical quantity describing motion and "hose measure is the product of

distance tra&elled and the time ta#en to tra&el that distance is ________.

1. speed

2. mass

3. "eight

4. displacement

Answer: 1


55/72

Question 43

Question: 0f you are tra&elling "ith a &elocity of 2/ m,s' ho" long "ill you ta#e to tra&el

: m

1. 2/ s

2. 25 s

3. 2/ min

4. 2.5 s

Answer: 2

Question 44

Question: 6ame the instrument used to measure instantaneous speed of a &ehicle.

1. accelerator

2. speedometer

3. ammeter

4. multimeter

Answer: 2

Question 45

Question: A body co&ers a distance > in time t. %hat is its speed

1. >,t

2. t,>

3. > t

4. ero

Answer: 1

Matter $n %ur &urroun'ings - Multiple Choice Test

Question 1

Question: atter has ___________.

1. no mass but occupies space

2. mass but occupies no space

3. mass and occupies space

4. no mass and occupies no space

Answer: 3

Question 2

Question: !he gaseous form of "ater is called as _______.

1. "ater gas

2. "ater &apour

3. fog


56/72

4. sno"

Answer: 2

Question 3

Question: !he state of matter "ith only one free surface is _______.

1. liquid

2. gas

3. solid

4. plasma

Answer: 1

Question 4

Question: 0n gases' particles &ibrate _________.

1. about their mean position

2. about a &ertical ais

3. about a hori$ontal ais

4. in any direction

Answer: 4

Question 5

Question: iing of gases is called ______.

1. diffusion

2. effusion

3. filtration

4. sedimentation

Answer: 1

Question 6

Question: A property not possessed by a fluid is _________.

1. it can flo"

2. it has mass

3. it has a definite shape

4. can be percei&ed by our senses

Answer: 3


57/72

Question 7

Question: %hich among the follo"ing is a solid at room temperature

1. 6itrogen

2. 9otassium permanganate

3. ;romine

4. elium

Answer: 2

Question 8

Question: %hich of these is a characteristic property of gases

1. Jases are not at all rigid.

2. Jases are not compressible.

3. Jases ha&e particles in fied positions.

4. Jases ha&e high density.

Answer: 1

Question

Question: A solid has _________.

1. maimum intermolecular space

2. definite mass but no definite &olume

3. &ery high compressibility

4. maimum intermolecular force of attraction

Answer: 4

Question 1!

Question: 8on&ersion of gas to liquid is called _________.

1. condensation

2. sublimation

3. &apourisation

4. solidification

Answer: 1

Question 11

Question: !he process by "hich "et clothes dry up is called _______.


58/72

1. e&aporation

2. boiling

3. condensation

4. solidification

Answer: 1

Question 12

Question: A solid that sublimes on heating is _________.

1. sodium chloride

2. copper sulphate

3. lead sulphate

4. ammonium chloride

Answer: 4

Question 13

Question: atter changes from one state to another "ith change in _________.

1. density

2. temperature

3. &olume

4. height

Answer: 2

Question 14

Question: !he process of a solid changing into liquid is called ___________.

1. liquefaction

2. melting

3. free$ing

4. solidification

Answer: 2

Question 15

Question: !he free$ing point of pure "ater is __________.

1. 1o8


59/72

2. o8

3. /o8

4. :5.3o8

Answer: 2

Question 16

Question: !he force bet"een particles of matter is called as ___________.

1. cohesi&e force

2. adhesi&e force

3. #inetic energy

4. thermal energy

Answer: 1

Question 17

Question: 9articles of matter are __________.

1. stationary

2. &ibrating in one position

3. in continuous motion

4. rotating about an ais

Answer: 3

Question 18

Question: !he temperature at "hich &apour changes into liquid is called ________.

1. free$ing point

2. melting point

3. boiling point

4. liquefaction point

Answer: 4

Question 1

Question: !emperature is a measure of ___________.

1. total #inetic energy of molecules

2. total potential energy of molecules


60/72

3. a&erage potential energy of molecules

4. a&erage #inetic energy of molecules

Answer: 1

Question 2!

Question: =or any substance the temperature remains same during the change of state due

to ___________.

1. loss of heat

2. latent heat

3. less supply of heat

4. lattice energy

Answer: 2


61/72

Q

/+upercon)uctors $re those &$teri$ls

1 %hich become non-conductors at transition point

2 %hich looses all electrical resistance "hen cooled belo" a certain temperature

3 0n "hich resistance rises to infinity belo" certain temperature

4 %hich conducts electricity in etra "idths

Ans:2

Q

/*hich one of the following is not $ r$)io$ctie ele&ent

1 Cranium

2 *adium

3 !horium

4 8admium

Ans:4

Q

/

A o)( is thrown ertic$ll( upw$r)s with $ spee) of 1## &sec/ *hile co&ing $c.

on groun) its spee) $t st$rting point will e

1 1 m,sec

2 1 m,sec

3 / m,sec

4 2 m,sec

Ans:1

Q

/*hen 1 litre of w$ter free7es the olu&e of ice for&e) will e

1 . litre

2 1. litre

3 1.11 litre


62/72

4 1./ litre

Ans:3

Q

/

An o8ect is pl$ce) etween the pole of conc$e &irror $n) the focus of the &irror

the i&$ge for&e) will e

1 ;ehind the mirror' &irtual' erect and magnified

2 At infinity' real in&erted and highly enlarged

3 ;yond centre of cur&ature' real in&erted and enlarged

4 ;eyond 2=' real in&erted and enlarged

Ans:1

Q

/

A hollow c(lin)ric$l ro) is fille) with $ir to &$.e it $ reson$nce colu&n/ To

pro)uce $ w$e of length 4! c& the &ini&u& length of ro) shoul) e

1 12 cm

2 24 cm

3 45 cm

4 cm

Ans:2

Q

/

0n $ telescope of &$gnific$tion power 1# the foc$l length of the o8ectie lens is 6#

c& wh$t will e the tot$l length of e(epiece

1 cm

2 2/ cm

3 3 cm

4 / cm

Ans:1

Q

/

A o( h$s fie resist$nce of 15 oh& e$ch/ The &$9i&u& resist$nce th$t c$n e

for&e) with the& is

1 ./ ohm


63/72

2 1 ohm

3 1,2/ ohm

4 1,/ ohm

Ans:2

Q

/

'$ch of 3 c$p$citors of c$p$cit( C $re connecte) together in series/ This

co&in$tion is $))e) in p$r$lle) to $ c$p$citor of c$p$cit( C/ Result$nt c$p$cit(

will e

1 8

2 38

3 48 4 48,3

Ans:4

Q

/A f$lling )rop of r$in w$ter $cuires the spheric$l sh$pe )ue to

1 >urface !ension

2 Jra&itational force

3 Atmospheric pressure

4 7iscosity

Ans:1

Q

/A periscope wor.s ( the principle of

1 *efraction

2 !otal 0nternal reflection

3 iffraction

4 *eflection and refraction

Ans:2

Q/

*hich of the following light w$es is outsi)e the isile spectru&

1 7iolet

2 ;lue

3 Kello"

4 Cltra&iolet

Ans:4

Q

/'sti&$te) ti&e perio) of $ pen)ulu& of length #/2& is closer to is

1 ./ sec


64/72

2 1 sec

3 2 sec

4 6one of these

Ans:2

Q

/*h$t is the $lue of .nee olt$ge of silicon )io)e

1 .37

2 .337

3 .:7

4 1.17

Ans:3

Q

/

There is 2# olt $ccross the in)uctor $n) 15 olt $cross the resist$nce in the $/c/

supplie) series R-L circuit/ *h$t woul) e the suppl( olt$ge 1 2 &olt

2 1/ &olt

3 2/ &olt

4 1:./ &olt

Ans:3

Q

/A tr$nsfor&er &$inl( tr$nsfor&s -

1 8urrent

2 7oltage

3 =requency

4 9o"er

Ans:2

Q

/*h$t is the power f$ctor of $ pure resistor circuit

1


65/72

Q/*hich t(pe of oscill$tor is &ost st$le

in si&ple circuit

1 8rystalline oscillators

2 8lapp oscillators

3 8olepitts oscillator

4 Armstong oscillator

Ans:1

Q

/*h$t is the proper use of sign$l gener$tor

1 esigning

2 !esting

3 *epairing

4 All of the Abo&e Ans:4

Q

/

0f one c(lin)er of $ )iesel engine receies &ore fuel th$n the others then for th$t

c(lin)er the --

1 Bhaust "ill be smo#ey

2 9iston rings "ould sti# into piston groo&es

3 >ca&enging occurs

4 Bngine starts o&erheating

Ans:1

Q

/The infor&$tion is sent ( C* tr$ns&itter ( -

1 8hanging the audio frequency

2 0nterrupting radio signal

3 Csing microphone

4 Csing camera

Ans:1

Q

/

Moisture c$n e re&oe) fro& luric$ting oil using -

1 !ubular centrifugal

2 8larifier

3 >par#ler filter

4 7acuum leaf filter

Ans:1

Q

/er&$niu& possesses -

1 !"o &alence electrons

2 !hree &alence electrons


66/72

3 =our &alence electrons

4 =i&e &alence electrons

Ans:3

Q

/ *hich of the following is not $ propert( of )ifference $&plifier

1 8apacitor is used in it

2 0t is used to compare t"o signals

3 ifference amplifier yields more than the direct couple ampliier

4 =requency of difference amplifier remains flat from $ero to high frequency

Ans:1

Q

/C$lorie $lue is the le$st of the following &$teri$ls -

1 8oal gas 2 9roducer gas

3 >team fiery gas

4


67/72

/

1 omentum

2 7elocity

3 isplacement

4 ass

Ans:4

Q

////sign$l will eco&e 7ero when the fee)$c. sign$l $n) reference signs $re eu$l/

1 0nput

2 Actuating

3 =eedbac#

4 *eference

Ans:2Q

/Motor-gener$tor set for ;/ C/ $rc wel)ing h$s gener$tor of -

1 >eries type

2 >hunt type

3 ifferentially compound type

4 Le&el compound type

Ans:3

Q

/

*hich of the following &otors is preferre) when uic. spee) reers$l is the &$in

consi)er$tion

1 >quirrel cage induction motor

2 %ound rotor induction motor

3 >ynchronous motor

4 . 8. motor

Ans:4

Q

/0n c$se of $ll e$rings which p$rt is &$)e h$r)er th$n others -

1 ;all

2


68/72

4 ;y increasing gain of the recei&er

Ans:4

Q

/

An electronics circuits in which )ifferent co&ponents such $s ;io)e Resistor $n)

C$p$citor etc/ $re connecte) sep$r$tel( is c$lle) -

1 8hassis

2 9rinted board

3 0ntegrated circuit

4 iscrete circuit

Ans:3

Q

/*h$t $re ,errites

1 agnetic but ha&e lo" resistance

2 agnetic but ha&e high resistance 3 6on-magnetic "ith lo" resistance

4 6on-magnetic "ith high resistance

Ans:2

Q

/%ow will $ re) flower $ppe$r if it is seen through $ green gl$ss

1 *ed

2 ;ro"n

3 %hite

4 Jreen

Ans:2

Q/ *h$t is the unit of electric$l energ(

1 Ampere

2 7olt

3 %att

4 Iilo"att-hour

Ans:4

Q

/A )io)e////

1 =unctions only in one direction

2 =unctions in both the directions

3 oes not function at all

4 0t gets damaged' "hen &oltage is applied

Ans:1

Q

/

*h$t is the freuenc( of the receier

1 455 #$


69/72

2 44/ #$

3 4// #$

4 4/ #$

Ans:4

Q

/

*h$t woul) e the e9pen)iture in 3# )$(s $t the r$te of 5# p$ise per unit if $ ul

of 1## * is use) fie hours per )$(

1 *s. 1./

2 *s. 5./

3 *s. :./

4 *s. ./

Ans:3

Q

/

Leer functions on which of the following principles

1 8ran#-shaft

2 Doining rod

3 8ran# pin

4 8ross head

Ans:1

Q

/table

2 ynamic

3 >table and dynamic

4 6either stable nor dynamic

Ans:2

Q

/A&ong the following st$te&ent which is the f$lse

1


70/72

Q

/

0n resist$nce he$ting highest wor.ing te&per$ture is ot$ine) fro& he$ting

ele&ents &$)e of///

1 6ic#el and copper

2 6ichrome

3 >ilicon carbide

4 >il&er

Ans:2

Q

/*hen the lo$) is $oe ///// $ s(nchronous &otor is foun) to e &ore econo&ic$l/

1 2 I%

2 2 I%

3 / I%

4 1 I% Ans:3

Q/

To conert &oing coil g$l$no&eter

into $n $&&eter which of the following

&etho)s is use)

1 >mall resistance in series

2 >mall resistance in parallel

3 igh resistance in series

4 igh resistance in parallel

Ans:2

Q

/*hich of the following c$n e use) to control the spee) of $ ;/ C/ &otor

1 !hermistor

2 !hyristor

3 !hyratron

4 !ransistor

Ans:2

Q/

Minorit( c$rrier in


71/72

2 !urning pair

3 *olling pair

4 >liding pair

Ans:1

Q

/*hile chec.e) with $ &ulti&eter $n open resistor re$)s -

1 ero

2 0nfinite

3 igh but "ithin tolerance.

4 Lo" but not $ero

Ans:2

Q

/

0n $&plitu)e &o)ul$tion -

1 Amplitude of the carrier is #ept constant

2 8hange occurs in carrier frequency

3 Amplitude is &aried according to the instaneous &alue of modelling "a&e

4 6one of these

Ans:3

Q

/The lue colour of the cle$r s.( is )ue to -

1 iffraction of light

2 ispersion of light

3 *eflection of light

4 *efraction of light

Ans:2

Q

/*hich of the following is use) in se&i-con)uctors

1 Aluminium

2 8opper

3 >ilicon

4 6one of these

Ans:3

Q

/*hich one of the following $llotropes of c$ron is use) for cutting $n) )rilling

1 iamond

2 Jraphite

3 Acti&ated carbon

4 8arbon blac#

Ans:1


72/72

Q

/*hich one of the following is $ ector

1 Iinetic energy

2 9ressure

3 *ate of change of momentum

4 ensity

Ans:3

Q/ =-r$(s co&prise of:

1 Blectrons only

2 9rotons only

3 6eutrons only

4Blectromagnetic radiations

Ans:4

Q

/The power of lens is - 2;/ *h$t is its foc$l length

1 2m

2 ./m

3 1.m

4 ./m

Ans:4

Documents

53508147 93 Physics MCQ and Answers IAS Exam