NAME : …………………………………… CLASS :……

SMK AMINUDDIN BAKI, KUALA LUMPURSEKOLAH BERPRESTASI TINGGI

UJIAN PENILAIAN 1

FORM 4

PHYSICS

1 ½ HOURS

SecQuestion Full

Mark Marks

A 1 - 30 30

B

1 3

2 6

3 5

C 1 16

Total

This question paper consists of 16 printed pages

Answer Sheet for Section A

1 7 13 19 252 8 14 20 263 9 15 21 274 10 16 22 285 11 17 23 296 12 18 24 30

60

ANSWER ALL QUESTIONS IN THE SPACES PROVIDED

SECTION A[30 marks]

1. Which physical quantity has the wrong S.I. unit?

Physical quantity S.I. unitA. Length MetreB. Mass KilogramC. Time SecondD. Temperature Celcius

2. Which of the following physical quantities is not a base quantity?

A. Weight C. TemperatureB. Time D. Electric current

3. Which of the following pairs is incorrect?

Quantity Type of quantity

A Current Scalar

B Acceleration Vector

C Work Scalar

D Momentum Scalar

4. Velocity, acceleration and momentum are ………………quantities.

A. base C. scalar B. derived D.vector

5. Which of the following quantities cannot be derived?

A. Electric current C. MomentumB. Power D. Force

6. Which of the following is the SI unit of a base quantity?

A. Kilometer. C. JouleB. Kilogram D. Voltage

7. Which of the following is not a symbol of a base SI unit

A. kg C. A B. s D. oC

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8. Which of the following power factor and its prefix is correct?

Power factor Prefix

A. 10-6 kiloB. 10 3 miliC. 10-2 hectoD. 10-1 deci

9. 4 328 000 000 mm in standard form is

A. 4.328 x 10-9 m B. 4.328 x 10-6 m C. 4.328 x 106 m D. 4.328 x 109 m

10. Which of the following prefixes is arranged in ascending order?

A. mili, senti, mikro, desi B. mikro, mili, senti, desi

C. mili, mikro, desi, senti D. desi, mikro, mili, senti

11. Which of the following has the smallest magnitude?

A. megametre B. centimetre C. kilometerD. mikrometre

12. The power generated by a power station is 250 GW. This power is the same as

A. 2.50 x 103 WB. 2.50 x 106 WC. 2.50 x 1011 WD. 2.50 x 109 W

13. Which of the following frequencies is the same as 106.8 MHz?

A 1.068 x 10 -4 HzB 1.068 x 10 -1 HzC 1.068 x 10 2 HzD 1.068 x 10 8 Hz

14. Which of the following measurements of length is the longest?

A. 4530 cmB. 0.453 kmC. 0.453 GmD. 0.00453 Mm

15. 108 kmh-1 is equivalent toA. 20 ms-1

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B. 30 ms-1

C. 50 ms-1

D. 60 ms-1

16. Density of lead is 11.3 g cm-3. What is the density of lead in kgm-3? A. 1.13 x 10-6 C. 1.13 x 104

B. 1.13 x 103 D. 1.13 x 10-4

17. Which of the following has the same unit as work?

A. mass x length2 x time C. Mass x length x time2

B. mass x length x time D. Mass x length 2 Time2

18. Which group contains scalar quantities only?

A. B.

C. D.

19. Which of the following shows the relation between the base quantities for density?

A.

B.

C.

D.

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SpeedWeightTime

Volume

DistanceWorkMassTime

ForceMomentum

VelocityWeight

DisplacementArea

DensityEnergy

20. Which instrument gives the most accurate measurement?

A

B

C

D

21. Diagram 1 shows the scale on a micrometer screw gauge.

DIAGRAM 1Which reading is shown?

A. 5.64 mmB. 7.14 mmC. 7.16 mmD. 7.64 mm

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22. Diagram 2.1 shows the scale of a micrometer screw gauge when the anvil and spindle are closed. Diagram 2.2 shows the scale of the micrometer screw gauge when it is measuring the thickness of a piece of glass.

DIAGRAM 2.1 DIAGRAM 2.2

What is the zero error of the micrometer screw gauge and the actual thickness of the glass?

Zero error Actual thickness A. –0.02 mm 12.84 mmB. –0.02 mm 12.86 mmC. +0.02 mm 12.84 mmD. +0.02 mm 12.86 mm

23. Diagram 3 shows vernier calipers.

DIAGRAM 3

The vernier calipers is used to measure the diameter of a marble. The reading produced has to be

A. subtracted by 0.07 cm B. added with 0.07 cm .C. subtracted by 0.03 cm .D added with 0.03 cm .

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24. A technician needs to measure the internal diameter of a water pipe as accurately as possible. Which instrument should be used?

A. metre rule B. measuring tape C. vernier callipers D. micrometer screw gauge

25. Which of the following steps can reduce the parallax error while recording the value of current from an ammeter?

A Use more sensitive ammeter.B Calculate the average value from the repeated readings.C Use a magnifying lens to read the reading from the ammeter.D Use an ammeter with a plane mirror underneath the pointer needle.

26. A, B, C, and D show the shooting marks on a target. Which marks can explain the concept of precision of a measurement?

27. Which of the following is not a purpose of plotting graph in scientific investigation?

A. Giving a consistent measurement B. Finding relationship between two variablesC. Find the values that out of rangeD. Interpreting data

28. Table 1 below shows the results of an experiment to investigate the relationship between

load and extension when a spring is stretched.

Load, F/ N 100 150 200 250 300Extension, X/ cm 1.0 1.5 2.0 2.5 3.0

TABLE 1

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The original length of the spring is l0 = 15.0 cm. What is the manipulated variable?A. Load, FB. Extension, xC. Original length of a spring, l0

D. Material used to make the spring

29. Diagram 5 shows a graph relating two physical quantities, H and K.

DIAGRAM 5

Which statement is correct?

A. H is the manipulated variable B. K is the constant variable C. H decreases linearly with K D. H is directly proportional to K

30. Diagram 6 shows a graph plotted from an experiment.

DIAGRAM 6Which of the following statement about the graph is not true?

A The title of the graph is graph force,F against time,t .B Time, t is the manipulated variable .C The gradient of the graph is 4 Ns-1 .D The force is directly proportional to the time .

8

H

K0

1001010

-10

SECTION B[25 marks]

1. Diagram 1 shows a micrometer screw gauge when the jaws are closed.

a) Name the part label P.

……………………………………………………………………………….........................

[1 mark]

b) What is the function of the part label P?

……………………………………………………………………………….........................[1 mark]

c) What is the value of zero error shown by the micrometer above?

………………………………………………………………………………........................ [1mark]

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DIAGRAM 1

2. Diagram 2.1 shows an oscillating pendulum.

Diagram 2.1

(a) Based on Diagram 2.1, choose the correct path for one complete oscillation. Tick ( )

the correct answer in the box provided.

PQ

PQR

PQRQP [1 mark]

(b) The stop watch in Diagram 2.2 shows the time taken for the pendulum to make 20 complete oscillations.

Diagram 2. 2

Based on Diagram 2.2, state

(i) The smallest division of the stop watch ,

……………………. s

[1 mark]

(ii) The time taken for 20 complete oscillations,

……………………. s

[1mark]

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Pendulum bob

(c) What is the type of physical quantity for time? Tick ( ) the correct answer in the box

provided.

Scalar quantity

Vector quantity [1 mark]

(d) Explain why a micrometer screw gauge is more sensitive than a vernier calipers.

…………………………………………………………………………………........[2 marks]

3. A car moves with an average speed of 75 km h-1 from town P to town Q in 2 hours as shown in Diagram 3. By using this information, you may calculate the distance between the two towns.

P Q

DIAGRAM 3

(a) (i) Based on the statements given, state two basic quantities and their respective SI units.

………………………………………………………………………………………[2 marks]

(ii) State a derived quantity and its SI unit.

………………………………………………………………………………………

[1 mark]

(b) Complete Table 2 by writing the value of each given prefix.

Table 2[2 marks]

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Prefix Valuemilinanomicromegagiga

SECTION C

[16 marks]

1. A student carries out an experiment to investigate how the temperature of water increases with the time of heating. Diagram 1.1 shows the set up of the apparatus for the investigation. Before the heater is switched on the initial temperature, θ0 of the water is measured. Diagram 1.2 shows meniscus of the mercury column in the thermometer.

DIAGRAM 1.2

DIAGRAM 1.1

A stopwatch and the heater is switched on simultaneously. At time, t = 20 s, the temperature, θ, of the water is read on the thermometer. Diagram 1.3 shows the meniscus of the mercury column in the thermometer.

The procedure is repeated for heating time, t = 40 s, 60 s, 80 s and 100 s. The corresponding positions of the meniscus of the mercury column in the thermometer are shown in Diagrams 1.4, 1.5, 1.6 and 1.7.

DIAGRAM 1.3 DIAGRAM 1.4

12

20

30

Thermometer

To power supply

Immersion heater

Water

30

40

30

40

DIAGRAM 1.5 DIAGRAM 1.6

DIAGRAM 1.7

(a) For the experiment described above, identify:

(i) the manipulated variable

…....……………………………………………………………………………….[1 mark]

(ii) the responding variable

…..………………………………………………………………………………. [1 mark]

(iii) a fixed variable

……….……………………………………………………………………………. [1 mark]

(b) Explain how parallax error can be reduced when the reading of the thermometer is taken.

13

40

50

50

60

50

60

…………………………………………………………………………………………….[1 mark]

(c) (i) Based on Diagram 1.2, determine the initial temperature, θ0, of the water.

Initial temperature, θ0 = …………….

(ii) Based on Diagrams 1.3, 1.4, 1.5, 1.6 and 1.7, determine the temperature, θ, for the corresponding values of heating time, t.

Tabulate your results for t, θ and Δθ in the space below.

Δθ is the increase in temperature.

Δθ is calculated using the formula,

[5 marks]

(d) On the graph paper, plot a graph of Δθ against t.

[5 marks]

(e) Based on your graph, state the relationship between Δθ and t.

…..…..….………………………………………………………………………………. [1 mark]

(f) State one precaution that should be taken to obtain accurate readings of θ.

………………………………………………………………………………………….

……..….……………………………………………………………………………….

14

[1 mark]

graph of Δθ against t

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- END OF QUESTION PAPER –

Prepared By Checked by

Pn Rohaida binti YahayaKetua Panitia Fizik

Pn Aslamiah binti Md NorGK Sains dan Matematik

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