Physics P1

4531/1 Physics Paper 1 October 2008 1 1 hours 4

Form Four

JABATAN PELAJARAN NEGERI NEGERI SEMBILAN DARUL KHUSUS PPSMI ASSESSMENT 2008 PHYSICS Form Four Paper 1 One hour and fifteen minutes DO NOT OPEN THIS QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO 1. This question paper consists of 50 questions. 2. Answer all questions. 3. Answer each question by blackening the correct space on the answer sheet. 4. Blacken only one space for each question. 5. If you wish to change your answer , erase the blackened mark that you have made. Then blacken the space for the new answer. 6. The diagrams in the questions provided are not drawn to scale unless stated. 7. You may use a non-programmable scientific calculator. 8. A list of formulae is provided.

This question paper has 21 printed pages [Turn Over

2 The following information may be useful. The symbols have their usual meaning. v −u t

19.

2.

v 2 = u 2 + 2as

20.

3.

1 s = ut + at 2 2

21.

4.

Momentum = mv

22.

5.

F = ma

23.

1.

6. 7. 8. 9. 10. 11.

a=

1 2 mv 2

24.

Potential energy = mgh

25.

Kinetic energy =

Elastic potential energy = Power , P =

ρ=

energy time

m V

Pressure , p =

F A

1 Fx 2

n=

sin i sin r

n=

real depth apparent depth

1 1 1 = + f u v Linear magnification, m = 1 f

P=

v = fλ

λ=

ax D

26.

Q = It

27.

E = VQ

28.

V = IR

29.

E = V + Ir

12.

Pressure, p= hρg

30.

Power , P = IV

13.

Heat, Q = mcθ

31.

N s Vs = N p Vp

14.

Heat , Q = ml

32.

15.

P1V1 = P2V2

33.

16.

V1 V2 = T1 T2

34.

E = mc2

17.

P1 P2 = T1 T2

35.

g = 10 m s-2

18.

pV = constant T

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v u

Efficiency = eV =

1 2 mv 2

I s Vs x 100% I p Vp

3 Answer all questions. Each question is followed by either three or four options. Choose the 1.Which of the following measurements is the longest? A B C D

1.2 x 10-11 km 1.2 x 10-6 dm 1.2 x 10-5 cm 1.2 x 10-1 mm

2.The Hitz FM channel broadcasts radio waves at a frequency of 92.8 MHz in the north region. What is the frequency of the radio wave in Hz? A 9.28 x 104 B 9.28 x 105 C 9.28 x 107 D 9.28 x 1010 3.The distance, s, travelled by an object along a straight line in time, t, is given by the 1 2 equation s = at . The SI unit of a is 2 A B C D

m s-2 m2 s2 s-1 s2 m-1

4.Diagram 1 is a graph that shows the relationship between physical quantities P and Q. P

R

0

S Diagram 1

Q

Which of the following equations shows the correct relationship? A B C

−R Q+ R S −R P = Q S −R P = Q+ S S P =

D P = - RS + Q 5.Diagram 2.1 shows the scale of a vernier callipers when the jaws are closed. 4531/1 © Oct 2008 Copyright PPDS

4

1

0

0

10

5

Diagram 2.1 Diagram 2.2 shows the scale of the same vernier callipers when an object is placed between the jaws. 5

6

10

5

0

Diagram 2.2 What is the thickness of the object? A B C D

5.60 cm 5.62 cm 5.64 cm 5.66 cm

6.A heavy lorry has high inertia. Which of the following observations is correct? A B C D

To start moving Easy Easy Difficult Difficult

To stop moving Easy Difficult Easy Difficult

7.Diagram 3 shows the displacement-time graph of a car . Displacement / m B

C D

A 0

Time /s Diagram 3

Which section A, B, C or D of the graph shows motion with a constant velocity ? 8.Diagram 4 shows a strip of ticker- tape that has been pulled by a trolley. The frequency of the ticker timer is 50 Hz. 4531/1 PPSMI / Physics/ F4 /P1/2008

5

P

Q

Diagram 4 Which of the following comparison of time and velocity at P and at Q is true ?

A B C D

Time at Q Same as at P Same as at P Longer than at P Longer than at P

Velocity at Q Same as at P Faster than at P Faster than at P Slower than at P

9.Diagram 5 shows a man standing in a lift moving down with a constant acceleration. R Lift moving downwards

W Diagram 5 Which relationship between the forces is true ? A W>R B W
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10.Diagram 6 shows a child bouncing up and down on a trampoline.

trampoline

Diagram 6 Which of the following physical quantities increases when she comes down to the trampoline? A inertia B momentum C acceleration D potential energy 11.Diagram 7 shows an acrobat performing a balancing action on a bar.

Diagram 7 The ability for the acrobat to do so can be explained by A B C D

The concept of inertia Principle of conservation of energy The concept of equilibrium of forces Principle of conservation of momentum

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12.Diagram 8 shows a golfer executing a backswing to hit the golf ball.

Golf ball

Diagram 8 The backswing movement is to A B C D

reduce the time of impact on the golf ball reduce the impulsive force on the golf ball increase the momentum transferred to the golf ball increase the accuracy of the golf ball reaching the hole

13.Diagram 9 shows two boats P and Q involved in a head-on collision.

Diagram 9 Which of the following physical quantities remains the same before and after the collision? A B C D

Momentum of boat P Kinetic energy of boat Q Total momentum of boat P and boat Q Total kinetic energy of boat P and boat Q

14.Which triangle of forces shows that the forces are in equilibrium? A

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B

C

8

15.Which of the following situations shows that the forces are not in equilibrium? A

B

Velocity of wooden block = 0 m s-1

C

The block is moving with zero acceleration.

D

The block is moving with acceleration of 2 m s-2

The block is moving with constant velocity of 4 m s-1

16.The full length of an extended spring is 20 cm. Which of the following shows that the spring is elastic when the force applied on the spring is released? A B C

The length of the spring becomes 18 cm The length of the spring becomes 20 cm The length of the spring becomes 22 cm

17.Diagram 10 shows a worker pushing a box up into a lorry on a smooth runway.

Diagram 10

Diagram 10 If a shorter runway is used, what changes can occur to the work done and the gravitational potential energy of the box?

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9 Work Unchanged Decreases Increases Decreases

A B C D

Gravitational potential energy Unchanged Increases Decreases Unchanged

18.Diagram 11 shows the motion of a coin of weight,W1 , and a leaf of weight, W2, in a vacuum. W1 is greater than W2 .

Diagram 11 Which of the following is true about the motion? A B C

The coin will reach the floor before the leaf Their acceleration depends on their surface area Both the leaf and the coin increase their speed at a rate of 10.0 m s-1

19.Diagram 12 shows a skier of mass 60 kg skies down a smooth slope.

Diagram 12 What is his speed at the bottom of the slope? A B C D

10 18 20 32

m s -1 m s -1 m s -1 m s -1

20.A monkey of mass 20 kg climbs a vertical pole of height 3 m in 10 s. The power of the monkey is A B

30 W 60 W

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10 C D

80 W 90 W

21.Diagram 13 shows four different arrangements, K, L, M, N of similar springs.

Diagram 13 Which of the following pair of arrangements gives the same extension? A B C D

K and L L and M M and N N and K

22.Diagram 14 shows gas bubbles rising from the bottom of a lake.

Diagram 14 Why the bubbles get larger as they rise? A B C D

Water pressure on the bubbles increases. Water pressure on the bubbles decreases. Atmospheric pressure on the bubbles increases. Atmospheric pressure on the bubbles decreases.

23.Which of the following factors does not influence the pressure in a liquid? A B C

Depth Density Volume

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11 D

Acceleration due to gravity

24.Which of the following diagrams shows the correct height , h, of the atmospheric pressure measured in a simple mercury barometer. A

B h

h

C

D

h

h

25.Diagram 15 shows a syringe, P, a rubber sucker, Q, and a straw, R.

P

Q P

R Q

Diagram 15 Which of the appliances uses the atmospheric pressure to function? A B C

Q only P and R P, Q and R

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R

12

26.Diagram 16 shows a domestic water supply system reservoir dam Supply tank in the roof pump

Diagram 16 What physics concept is used in this system? A B C D

Liquid pressure Pascal’s principle Atmospheric pressure Archimedes’ principle.

27.Diagram 17 shows a J-tube.

Diagram 17 What is the pressure of the gas trapped inside the J-tube, in Pa? [The atmospheric pressure = 1.00 x 105 Pa, density of mercury = 1.36 x 104 kg m-3] A B C D

1.19 x 105 Pa 1.90 x 105 Pa 2.19 x 105 Pa 2.90 x 105 Pa

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28.Diagram 18 shows a submarine rising to the water surface.

Diagram 18 What is the relationship between the buoyant force, U, and the weight, W? A B C

U>W U=W U< W

29.Diagram 19 shows a hydraulic jack. Piston A and piston B have cross-sectional areas of 5 cm2 and 100 cm2 respectively. A mass of 3 kg is placed on piston A.

Diagram 19 What is the maximum weight that can be lifted by piston B? A B C D

300N 600N 800N 900N

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30.Diagram 20 shows a stream of fast moving air passing above the opening of a metal tube. It is observed that the polystyrene ball is lifted.

Diagram 20 This phenomenon occurs because A The velocity of air at Y is less than that at X B The pressure of air at Y is less than that at X C The density of air at Y is more than that at X D The temperature of air at Y is more than that at X 31.Why is mercury used in thermometers? A B C D

It is cheap It is opaque It has low boiling point It wets the capillary tube

32.Diagram 21 shows the heating curve of a small quantity of ice starting at – 2°C. .

Diagram 21 What type of energy is involved in BC? 4531/1 PPSMI / Physics/ F4 /P1/2008

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A Latent heat of fusion B Specific heat capacity C Latent heat of vaporization 33.Diagram 22 shows the maximum temperature at daytime and the minimum temperature at night-time of the land and the sea during a 24 hours period.

Diagram 22 Which diagram shows the correct air movement?

A

B

C

D

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34.Which physical property of a liquid is suitable to be used as a cooling agent in a car radiator ? A B C D

Compressible Expand easily Low boiling point High specific heat capacity

35.Diagram 23 shows some gas is trapped in a cylinder with a smooth piston . The gas is heated.

Diagram 23 Which of the following physical quantities remains constant ? P : Mass of gas Q : Volume of gas R : Pressure of gas A B C D

P only Q only P and R Q and R

36.Some oxygen gas is put in a container of constant volume. What will happen to the oxygen molecules when the gas is heated? A B C D

They will expand They will become denser They will move further apart They will move more quickly

37.A 40 W heater is used to boil some water. The mass of water has decreased 0.002 kg In 100 s. Assuming all the heat energy is absorbed by the water, the specific latent heat of vaporization of water is A

40 × 100 × 0.002 J kg-1

B

40 J kg-1 100 × 0.002

C

100 J kg-1 40 × 0.002

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17 40 × 100 J kg-1 0.002 38.What modification will increase the sensitivity of the mercury thermometer? D

A B C D

Decrease the volume of the bulb Decrease the thickness of the glass stem Decrease the diameter of the capillary tube Decrease the number of markings between 0°C and 100°C

39.Which of the following statements is correct ? A B C D

Heat is a base quantity 0°C is called the absolute zero Temperature is a vector quantity Two objects at thermal equilibrium have the same temperature

40.Diagram 24.1 shows a cylinder containing gas of 27°C at atmospheric pressure. The length of gas column is l cm . Diagram 24.2 shows that the length of gas column has increased to 2l when the gas is heated.

Diagram 24.1

Diagram 24.2

What is the final temperature of the gas? A 54 °C B 273 °C C 327 °C D 600 °C 41.A light ray undergoes total internal reflection when it is travelling from glass to air. K - The speed of light is faster in glass than in air. L - The refractive index of glass is higher than that of air. M - The incident angle is larger than the critical angle of glass. Which statements about total internal reflection is correct? A B

K and L K and M

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18 C L and M D K, L and M 42.Diagram 25 shows an object placed in front of a convex mirror. A B

object

C

2F

F

F

D

Diagram 25 Which ray, A, B, C or D is the correct reflected ray ?. 43.Diagram 26 shows a light ray directed at a plane mirror.

30°

Diagram 26 What is the angle of incidence and the angle of reflection? A B C D

Angle of incidence 30° 30° 60° 60°

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Angle of reflection 30° 60° 30° 60°

2F

19

44.Diagram 27 shows two cars, X and Y, travelling in the opposite directions and moving towards a sharp bend.

Diagram 27 Which of the following mirrors is most suitable to be placed at P so that both drivers can see the oncoming cars before reaching the bend ? A

B

C

D

45.Diagram 28 shows a prism periscope.

Diagram 28 Name the phenomenon of light that is involved in designing a prism periscope. A Dispersion B Reflection 4531/1 © Oct 2008 Copyright PPDS

20 C Refraction D Total internal reflection 46.Diagram 29 shows a coin placed at the base of a beaker. The image appears to be 5 cm from the base of the beaker.

Diagram 29 What is the refractive index of the liquid? A

13 5

B

13 8

C

8 5

D

19 14

47.Diagram 30 shows a converging lens producing an upright virtual image.

Diagram 30 Which optical instrument uses this arrangement? A B C

A camera A projector A telescope

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21 DA magnifying glass 48.A convex lens has a focal length of f cm. The lens produces an enlarged, virtual and upright image. The object distance is A B C D

less than f same as 2f more than 2f between f and 2f

49.Diagram 31 shows a light ray KO in a glass block striking the glass-air boundary at an angle of incidence of 52°. The refractive index of the glass block is 1.52.

Diagram 31 Which of the following is the path taken by the ray? A B C D

OL MQ MP MN

50.Which of the following statements is correct when a simple astronomical telescope is used at normal adjustment? A

The distance between the objective lens and the eyepiece lens is longer than the sum of both focal length of the two lenses.

B

The distance between the objective lens and the eyepiece lens is equal to the sum of both focal length of the two lenses.

C

The distance between the objective lens and the eyepiece lens is shorter than the sum of both focal length of the two lenses

END OF QUESTION PAPER 4531/1 © Oct 2008 Copyright PPDS