Paper 1 May 2001 Physics

UNIVERSITY OF CAMBRIDGE LOCAL EXAMINATIONS SYNDICATE General Certificate of Education Ordinary Level

PHYSICS

5054/1

PAPER 1 Multiple Choice MAY/JUNE SESSION 2001

1 hour

Additional materials: Multiple Choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended)

TIME

1 hour

INSTRUCTIONS TO CANDIDATES Do not open this booklet until you are told to do so. Write your name, Centre number and candidate number on the answer sheet in the spaces provided unless this has already been done for you. There are forty questions in this paper. Answer all questions. For each question there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate answer sheet. Read very carefully the instructions on the answer sheet. INFORMATION FOR CANDIDATES Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet.

This question paper consists of 16 printed pages. MML 203 6/00 QF10451/2 © UCLES 2001

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2 1

The diagram shows part of a vernier scale. mm 30

0 35

5 40 10 45

What is the correct reading? A

2

30.5 mm

B

33.5 mm

C

38.0 mm

D

42.5 mm

An object falls freely in a gravitational field. Which of the following describes the resultant force acting on, and the acceleration of, the object at terminal velocity?

resultant force

acceleration

A

decreasing

increasing

B

increasing

decreasing

C

increasing

increasing

D

zero

zero

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3 3

The diagram shows a speed-time graph.

speed X

Y

W 0V 0

Z time

In which region is the acceleration decreasing?

4

A

V to W

B

W to X

C

X to Y

D

Y to Z

Two rubber balls of the same size are both dropped on the Earth and on the Moon. One ball is solid, and one is hollow. The approximate gravitational field strength on the Earth is 10 N/kg and on the Moon is 1.7 N/kg. Which ball has the greatest force acting on it?

type of ball

where dropped

A

hollow

on the Earth

B

hollow

on the Moon

C

solid

on the Earth

D

solid

on the Moon

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4 5

A triangular piece of card with a triangular hole can be balanced on the thin edge of a ruler, as shown.

In which other position will the card balance on the ruler? A

6

B

C

D

The diagram shows two cubes made from the same material. One cube has sides that are twice as long as the other cube.

2x

x

W The weight of the small cube is W. What is the weight of the larger cube? A

2W

B

4W

C

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8W

D

16 W

5 7

A student wishes to plot an extension/load graph for a spring. He assembles some equipment. Which of the following is not needed?

8

A

5 x 1 N weights

B

metre rule

C

spring and stand

D

stopwatch

A sledge of mass 25 kg is pulled across level ground with a horizontal force of 60 N. The constant force of friction is 20 N. What is the acceleration of the sledge? A

9

0.63 m/s2

B

1.6 m/s2

C

2.4 m/s2

D

3.2 m/s2

A ball is dropped from a height as shown.

1 ball

2

3

Ignoring the effects of air resistance, the total energy is A

greatest at point 1.

B

greatest at point 2.

C

greatest at point 3.

D

the same at all points.

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6 10 A 300 N force is applied to a box in the direction XY in order to move it up a ramp of the dimensions shown. Y N 300

3m

5m 4m

X

How much work is done when moving the box from X to Y? A

900 J

B

1200 J

C

1500 J

D

3000 J

11 On a frozen lake, the ice will break if the pressure on it is greater than 1.0 N/cm2. Four boys stand on the ice. Which one will fall through?

weight of boy

area of feet

A

200 N

270 cm2

B

300 N

250 cm2

C

400 N

500 cm2

D

500 N

560 cm2

12 Which of the following correctly compares the forces between the molecules in ice, water and steam? weakest forces

strongest forces

A

ice

steam

water

B

ice

water

steam

C

steam

water

ice

D

water

steam

ice

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7 13 Water evaporates from a shallow dish.

A student can change: the depth of water in the dish; the surface area of the dish; the volume of water in the dish. How many of these changes, if any, would alter the rate at which evaporation occurs? A

0

B

1

C

2

D

3

14 Which instrument is most suitable for measuring a rapidly changing temperature? A

alcohol-in-glass thermometer

B

clinical thermometer

C

mercury-in-glass thermometer

D

thermocouple

15 In the experiment shown, the amount of electrical energy used to melt some ice is measured using a joulemeter.

crushed, pure ice

joulemeter

immersion heater electricity supply

To find the specific latent heat of fusion of the ice, what must also be measured? A

the mass of water produced by melting ice

B

the temperature change of the ice

C

the time taken for the ice to melt

D

the voltage of the electrical supply

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8 16 A teacher has a large metal tank of water in which he wants to set up a convection current.

Z

Y water

X

Which of the following arrangements would do this? A

cooling at X

B

cooling at Y

C

heating at Y

D

heating at Z

17 A vibrator sends ripples across the surface of water. They run closer together as they travel further from the vibrator. This shows that the ripples A

decrease in frequency.

B

increase in frequency.

C

slow down.

D

speed up.

18 A wave source of frequency 1000 Hz emits waves of wavelength 0.10 m. How long does it take for the waves to travel 2500 m? A

2.5 s

B

4.0 s

C

25 s

D

19 Which statement about the image formed by a converging lens is correct? A

It is always real and erect.

B

It is always real and inverted.

C

It is always virtual and erect.

D

It may be either virtual or real.

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100 s

9 20 The diagram shows a patient having her eyes tested. A chart with letters on it is placed behind her and she sees the chart reflected in a plane mirror. 2m

plane mirror

3m

patient

chart

How far away from the patient does the chart seem to be? A

2m

B

4m

C

5m

D

7m

21 Which factors influence the quality (timbre) of sound waves? A

amplitude only

B

fundamental frequency only

C

amplitude and fundamental frequency

D

fundamental frequency and other frequencies

22 Under normal ‘working’ conditions, radio loudspeakers, industrial machinery and children in a playground all produce sound waves. Under the same air conditions, these sound waves all A

have the same amplitude.

B

have the same frequency.

C

have the same wavelength.

D

travel with the same speed.

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10 23 The diagram shows a model railway signal.

signal arm iron nail

a.c. supply

coil

What does the signal arm do when the switch is closed and a current flows through the coil? A

It goes down and stays down.

B

It goes up and stays up.

C

It goes down and then returns to its original position.

D

It goes up and then returns to its original position.

24 Which diagram shows the electric field pattern between two charged spheres?

A

+

–

B

+

–

C

+

–

D

+

–

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11 25 An electric lamp uses energy at the rate of 48 W on a 12 V supply. How much charge passes through the lamp in 2.0 seconds? A

0.25 C

B

0.50 C

C

2.0 C

D

8.0 C

26 What is the electrical symbol for a fuse? A

B

C

D

27 A circuit is set up as shown.

switch 1 switch 2

switch 3 Which switch setting lights all three lamps?

switch 1

switch 2

switch 3

A

closed

closed

open

B

closed

open

closed

C

open

closed

closed

D

open

closed

open

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12 28 Which diagram shows the correct connections for a switch and lamp in a lighting circuit? L

key

N A

L

live

N

neutral

E

earth

E

metal case L N B

E

L N C

E

L N D

E

29 A heater used on a 250 V mains circuit has a 5 A fuse in its plug. Which is the highest power rating for this heater? A

50 W

B

250 W

C

1000 W

D

2000 W

30 The e.m.f. induced in a conductor moving at right angles to a magnetic field does not depend upon A

the length of the conductor.

B

the resistance of the conductor.

C

the speed of the conductor.

D

the strength of the magnetic field.

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13 31 Three plotting compasses are placed close to a solenoid carrying a current. plotting compasses

How many of the compass needles will change direction if the current through the solenoid is increased? (Ignore the effect of the Earth’s magnetic field.) A

0

B

1

C

2

D

3

32 A transformer consists of one coil with 1200 turns and a second coil, with a total of 120 turns, which can be tapped at various places. R 40 1200

S 40

240 V

20 20

T U V

Which pair of terminals should be connected to a 12 V, 24 W lamp for it to be lit normally? A

RT

B

RV

C

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SU

D

TV

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14 33 The diagram shows a light-dependent resistor (LDR) in a circuit.

What could this circuit be used for? A

to switch on the lamp when daylight begins

B

to switch on the lamp when it begins to get dark

C

to make the battery charge up in sunlight

D

to make the lamp flash on and off

34 The diagram shows a beam of electrons entering a magnetic field. magnetic field

beam of electrons

What is the effect of the magnetic field on the electrons? A

They are deflected into the plane of the diagram.

B

They are deflected out of the plane of the diagram.

C

They are deflected towards the bottom of the diagram.

D

They are deflected towards the top of the diagram.

35 A radioactive nucleus is represented by nucleus of element Y.

227 X. 85

It emits a beta particle and forms a different

Which of the following represents this new nucleus? A

223Y 83

B

225Y 84

C

228Y 85

D

227Y 86 5054/1/M/J/01

15 36 A radioactive source is placed 2 cm in front of a Geiger-Muller tube which is connected to a meter. Different absorbers are placed between the tube and the radioactive source. The results are as follows.

absorber

average count per minute

20 mm air

2600

1 mm paper

2600

2 mm aluminium

1500

2 mm lead

800

What is the radioactive source emitting? A

alpha particles only

B

alpha particles and beta particles

C

beta particles and gamma rays

D

gamma rays only

37 The results of the alpha particle scattering experiment gave evidence for which of the following? A

nuclear fusion

B

radioactive decay

C

the existence of isotopes

D

the nuclear atom

38 What are the particles in the nucleus of the oxygen isotope 178O? electrons

neutrons

protons

A

0

9

8

B

0

17

8

C

8

0

9

D

8

9

0

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16 39 Which pair of quantities is not proportional? A

angle of incidence and angle of refraction for light entering a glass block

B

current and potential difference for a resistor at constant temperature

C

extension and load applied for a wire which obeys Hooke’s law

D

speed and time for an object freely falling from rest through a vacuum

40 Simple experiments are performed to determine values of three quantities.

quantity

the temperature of a liquid

the e.m.f. of a cell

the weight of an object

instruments

2 thermometers

2 voltmeters

2 newton-meters

V

experiment object V

In how many of these experiments, if any, are the measured values of both instruments added together to determine the value of the quantity? A

0

B

1

C

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2

D

3