Class Xi Practise Questions

7/23/2019 Class Xi Practise Questions

1/49

&

&

1. = + 2 .

1

2. .

() 3.0/2= /2

() 6.67 10112/2= 132

1

3. . 1

4. 1.56

1016. ( 3 108/)

2

5. () () () ,

.

2

6. 1= 100 3 2= 200 4 .

2

7. , ,

2

8. 19 1010 /2. 2.

.. .

3

9.

.

3

10.

2

mF

r

=

3.5 0.1m kg kg=

20 / 1 / 12.5 0.5m s m s r m m= =

(1) (2) %

.

3


2/49

&

&

1. ..? 1

2. .. ? 1

3. ? 1

4. 824.7

35.7211 . .

2

5.

. ,

6.31010?

2

6. ? 2

7. ? 2

8. ( )

2

P aV b RT

V

+ =

2

9. , , , ,

. 2 5 2/EL m G

2

10. ()

() =

() =

() : 24m

P=D l

, 1%, 1.5% 0.5%. %

?

3


3/49

1. s t= 1

2. .

1

3. 1

4. 2

5. .

2

6. 60/

40/. .

2

. v at = + . 3

.

( )3 2

6 15 40x t t t m= +

() .

() .

() .

3

. . (1) 0 4

(2) 0 (3) 0 12 .

.

5


4/49

1. 400 .

1

2. 2.5 .

.

1

3. 14. 2

5. . .

2

6. 32+ 7 9,

.

2

7. . () 5

9 .

2

8.

54/. .

126/ .

100/.

3

9. 2(2 1)a

Snth u n= + .

3

10. 44.1

. 9.8/ 2

3


5/49

1.

1

2. 1

3. .

, , , .

1

4.

2

5.

. (1) = 3 (2) = 6.

2

6. 4.9/. 245.

2

7. 126/.

200. ( )

2

8. 2

1

2s ut at = +

3

9. () ()

() 500/

1500/ .

3

10. () = + () 2 2= 2 3


6/49

1. 1

2. 30 10/.

1

3. 1 1

4. 2 3 4 2

5.

2

6. 45

2

. 3

4

2

. .

.

3

. . 3

10. ()

() .

.

3


7/49

1. Give an example of a body moving with uniform speed but having a variable

velocity and an acceleration which remains constant in magnitude but changes in

direction

1

2. 1

. A and B

. .A B

1

. 10 120

.

10

2

. .

2

.

2

.

2

. A

2 B

. 2A B+

.

2

.

2 3 4 3 5A i J k and B i J k= + + = +

2

10. () A and B

A and B

1

2AB

()


8/49

1.

,

1

2.

30 60,

1

3. 1

4. .

2

5. . ,

.

2

6. 30/,

45. , 10/2.

2

7. 600

. .

2

. ,

. .

3

. ' ' 30

60

.

3

10. () ()

()

3


9/49

1. ,

1

2. 10..

1

3. .

,

,

1

4. .

2

5. 0.05

6/ .

.

2

6. .

,

.

2

. .

2

. 0. ,

() 10/.

() 5/2.

() 5/2. ./2.

3

. () () 0.1 .

30/ 20/.

.

3

10. .

.

() ( ) .

()

() .

3


10/49

1. .

1

2. , . 1

3. . 1

4. .

.

2

5. ,

2

6. 2

7. 40 600

. ()

6/2() 4/2 ()

5/ () .

10/2 .

2

8.

10 30

. . 0.5

3

. 3

10. 0.40 10/

8.0 30.

, 0,

0, 5, 25, 30

3


11/49

1. 1

2. 1

3. . . 1

4. .

2

5. 16 12 200

.

2

6. 3000.

33000. 9.8/2.

2

7. 2

8.

() ,() .

() .

3

9. , .

.

3

10. 20 54/.

, 0.3/2 .

()

()

()

3


12/49

1. 1

2. 1

3. 1

4.

() .

() .

2

5. 1, 2

. .

.

2

6. 0.020 100.

0/,

2

7. 30 54/.

106.

3

. ,

.

3

. () . ..

()

5


13/49

1. .

1

2. . . .. 1

3. .. 1

4. .

..

2

5. .

2

6. 2

7. .. 2

8. ,

3

9. 2 7

0.1.

(1) 10

(2) 10

(3) 10.

3

10. 3


14/49

1. , 1

2.

1

3. 15 15

1

4. .

2

5. 2

6. 0 5

2 + 32. .

2

. 3

. .

2

.

3

.

.

.

3

10. 20% ..

3


15/49

1. If two bodies stick together after collision will the collision be elastic or inelastic? 1

2. , 1

3. .

, .

1

4.

, ,i j k

2 3 ,F i j k N = + +

, ,i j k ,

4

2

5. 1 2.

2

6. 2

7. 0.4 4/

0.6 2/.

, ..

2

8.

3

9. () . .

() ,

5


16/49

. .

.

.

.

.

d tt

dt=

.

. +

+ .

.

. ()

()

() w

()

1

2 2G Me Ms r


17/49

1. 1

2. 20 kg

1

4m

1

. 1

.

3 4 5 6 6 ?w i j x and r i j k

= + = +

2

. 2 2 2ow w = 2

.

2

.

2

. 0 1

10

.

. () .

() , . .K E

.


18/49

1. 0.5 12/.

1

2. 1

3. 1

4. .

2

5. ow w at = + 2

6. 2 5 4F i j k = +

( )3 3 3r i j k m= + +

2

7.

27

5MR .

3

8. 1, 2, 3 4 , ,

1. .

3

. ()

() . 500 10

() ()

()

5


19/49

1. 1

2. 1

1

1

3. .

1

4. 5.2 .

2

5.

12 21=F F

2

6. 2

7.

2

8. 400 2

6.4106

61024

. 2

.

3

10. (1) (2) (3)

.

3


20/49

1.

1

2. . 1

3. 1

4. 2

5.

.

2

. 0

41 .

2

.

30 .2.

2

.

2

2

.

, 2 .

2

10.

5


21/49

1. 1

2.

1

3. 1

4. 2

. 2

.

2

. 400, 1

100

2

. .

3

. 4%

400

3

10.

3


22/49

1. . ? 1

2. 0.1%

100

?

1

3. , :

1) 2) 3) .

2

4. A 51052.

1% : 1) 2) .

2

5. = = 0.74A,

= 0.5A; 1.9A ?

2

6. A

? ?

2

7. C A

?

2

8. . ? 2

9. :

1) B 2) B 3) .

3

10. 1, 1 2

2. ?

2


23/49

1. 1

2. 1

3. .

2

4. 2

5.

)

2)

3)

2

6.

3

7.

. ,

) ,

) , .

) .

3

8. . 2

9. 2.010+11 /2.

2.81010, 109

2

3


24/49

1. 1

2. 1

3. 1

. 2

.

, .

2

. 0.0 /

2

2

. 1

2

3

. 1000 .

.

0.0 /

.


25/49

1. 1

2. 2

3. 1000 ,

2

4. . ,

2

5.

= 76

= 13.6/

2

6.

2

7. .

,

2

8.

. .

,

2

9. 20% .

= 10003.

2

10. 5 :

1)

2) .

= 13.63 = 7.23

2


26/49

1. . 1

2. ,

.

1

3. . 1

4. 0.1

7.2 102/

1.013 105/2

2

5. 2

6.

.

1

7. .

,

2

8. 1 1000 .

72 103/

2

. 4 ,

0.07 /

2

10. 1 64

72 103/2

2

11. 1

12.

. ,

( )

( )

3 3 3

2 2 24

P c a bT

a b c

=

+


27/49

1.

2

2. .

1

3. 1

4.

2

5. 1

5 . ,

2

6. 2

7. 5 5 1

1.55 2.

2

2

8. . , .

2

9. 15 5 0.06 0.02

.

15 ,

:

1)

2) .

3

10. 1 103 1 104 3

.

, .

:

1 103 2; 10 2;

1 103 3

3


28/49

1. 1

2. 1

3. 1

4. . 2

5. 2

.

. 1 0.35/.

0.5/.

2

. 3

.

, 1 2/.

10/

3

. ,

5


29/49

1. B ? 1

2. .

?

1

3. .

, ?

1

4. . ? 1

5. 2 102 4 102

.

?

2

6. A 20 4 .

2/ 10 / 2. C

?

2

7. 2.5 105 /2.

, 2.0 10 5

/2. C ?

2

8. A . C

C

2:5. = 0.8

2

9. , .

, ?

2

10. , 5

/2 1 .

? D = 800/3?

3

11. 1) 8 1033/.

40 1042, C

.

2)

3 104. D 1000 /3.

3. 3.6 10 4?

3


30/49

1. ? 1

2.

?

1

3. ? 1

4.

.

?

1

5. . 100.

600 500.

?

2

6. ? 2

7. 0.12% 200.

?

2

8. 00 5000 1.027 : 1.

?

2

9. 3 .

?

2

10. 1

. . . = 4 = 4.186 /

, = 8.314 / / ?

2

11.

?

2

12. .

, .

?

= 9 106/ 0 = 1.8 104/ 0

2


31/49

1. 1

2. 1

3. ,

1

4. 2

5. 1, 2

1 2

2

6. 2.56

00 3.56 1000. ,

5.06 .

2

7. , 0.162 11 ..

0.001293 3

3

8. ,

3

9. 1.00 100

1000 . 2100.

3.36105, 4200.

2.25 106

3

10. 2. ,

1.5. 40%

.

. 800/. 10/2

2


32/49

1. ? 1

2. ? 1

3. ? ? 1

4. A

. ?

2

5. A 0.20 800

0.05 200 3 200.

? = 0.81 3 ;

= 0.6 0 ; = 0.094

0, A = 0.22 0?

2

6.

?

2

7. A .125

0.075 . ... =

4.2 ?

2

8. ? 2

9. 2

200 500 :

1) 2)

, ; = 1.5 = 2.49

3

10. ?

?

2

11. = = &

?

2


33/49

1. ; ? 1

2.

?

1

3.

?

1

4. ,

V

R

C= 0.67 : , ?

2

5. A 50 , 0.02 0C 300C.

840

00C. ? A

?

2

6. A 2 4 . , ?

2

7. C C = C= ; C=

= ?

2

8. ,

C?

2

9. . . .

,

? = 3 .

3

10. ? 2

11. ?

. 3.4 10 5

, = 10 2?

2


34/49

1. ,

. ?

1

2. 270C 9270C

?

1

3. A B . 1

2.

A B?

2

4. A 10 . 100C.

C 1.

D = 13; = 0.005C0C;

= 80C?

2

5.

1 2

.

1 2(1> 2).

()?

2

6.

, 1:2

.

4 , ?

2

7. ? ? 2

8. A 2.16

107. ,

130C. = 2.88103 , = 5.77108

24?

2

9. A . ? 2

10. A 0.152 1.0.

6 ,

. =

1090C, = 2256?

2

11. ? 2


35/49

1. 1

2. . 1

2(1 2).

1

3. 6 .

200. 400. 1

1

4. ,

1

5.

1

6. 4700 0 14106.

2

7. , 2

8.

.

2

9. 12 450 500.

,

2

10. 1

2

2. 2

.

2

11. 4 4 10 (1 1.260). , 460 320.

1) .

2) (2 0.56 0) 7.5 ,

2

12. 75 125 .

2.

1000 00 .

.

9.2102 0 1.1102

0

2


36/49

1. , 1

2. 1

3. , 1

. 2

. 20 2

. 1000 00.

2

2

.

. /2

2

. 3

. , .

3

. .


37/49

. %

.

.

.

.

)

)

.

.


38/49

.

.

.

.

.

.

.

.

. 00

.

.


39/49

1. 1

2. 1

3. 1

4. 100 .. 270 2270.

1) ; 2) 3)

2

5.

.

2

6.

2 .

300

500 . 1200

.

2

7. 300 264. 1

,

2

8. ,

2

9. 1000

300. 1 420.

3

10. ,

2

11. .

.

1.4

2

Volume

A B

C

Pressure

Volume

AB

C

V1

V2

T1

T2

Temperature


40/49

1. .

1

2.

1

3. 1

4.

20. ,

2

5. 2

6.

2

. 2

. 2 2

. 00 , 1

13 1.01 3 .

1.0131052

0 /

2

10. 3

11.

1 2

.

VA

VD

VB

VC

2

P

A

B

CD

T1

T2

VA

VD

VB

VCV

500 B A

E F

800 (C M3

)

C D

500

800

p 200

v


41/49

1. 1

2. 00.

1

3

rd

2

3.

2

4. 2

. 2, 4, , , /. .

1)

2)

2

. 3

. 3

.


42/49

1. 1

2. , 1

3. 1

4. 1 2 ( 32) .

. 1

2

2

5. , .

2

6. 1 2 .

. 1

2 1 2

3

7. , 2

8. 1 . . .,

2

9. 0.33 2 200.

1) .

2) . . . .

2

10. 2

11. 1


43/49

1. 1 3 1 3 , . . .

?

1

2. ,

?

1

3. ? 1

4. ? 1

5. 1

2. ?

2

6. ? 2

7. A

.. 200

? A A = 39.9 = 4.0?

2

8.

?

2

9. 5, 8, 12, 12, 12, 14, 14, 17 20 /. :

1)

2)

3) ... ?

3

10. P

V

CY

C

=

()?

3

11. . ? 2


44/49

( )

1. .

1

2. ,

1

3. : = 0.40

(440+0.61)

1) 2) 3)

4) , 5) .

2

4. .

1

5. , 2,

. = 0.08 = 2,

2

6. .

2

7. 8 ... 30 . 60,

30. : ) ) )

12

2

8.

5

9. . 4

1 3 / 2.

2

2

10.

2

11. ... 16

. 25

5.12.

2


45/49

1. 1

2. 1

3. . . 1

4. .

1)

. 2)

2

5. .

21 %.

2

6. 4 4 .

2

7.

2 .

2

,

2

8. 1.7 /2.

3.5

2

. . . . ,

, , ,

.

2


46/49

1. . 1

2. 1

3. 1

. 20 .

30

2

. 2

. . 2

. .23 . .

,

2

. 2

. 3

10. 2

11. 110.

123

2


47/49

( )

1. .. 1

2. .. 1

3. ... /

3 3 / 4.

2.5

2

4. , 2, 4, .

.

2

5. .

1 2

1 2. :1

2 2 2

2 1

2 2

1 2

2 x x

Tv v

=

2

6. =

1 2 1 2.

.

2

7. 3

8. = =

.

2

9. ... :

( )2

A Cos ;x wt wT

= + =

( = 0) 1 ,

2

10. = =

3

M

K1

K2


48/49

1. . 1

2. 0.2

.

1

3. 600,

1

4. 2 100

150 .

2

5. 2 .

50 50.1 .

2

6. 2

7. :

( ) ( )1 1 2 2Sin SinX a wt X a wt = + = +

,

. 1 2

2

8. 300

270.

00

2

9. 30

.

+1. 1

2

10. . 2

11.

3


49/49

1. :

1

2

Y a sin wt

Y =a sin2

wt

=

+

?

1

2. ? 2

3. ? 2

4. A 1

2

. 1 2?

2

5. A

= 0.30 (314 1.57)

= , = , = . .

A

1= 0.1 (314 1.57 + 1.57)

?

2

6. 2

.

1 ?

2

7. , 8 , 30 180 / .

?

2

8. A /3 1

0.05 .

? = = 9 10 210 N/m ?

2

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Class Xi Practise Questions