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WorksheetsSc Physics Paper 1.2
Total questions: 20
Worksheet time: 40mins
The diagrams show a simple pendulum at the ends and centre of its swing. Which labelled arrow shows the distance moved by the pendulum during one period?
C to A
A to B to A
B to A to C
B to A to C to B
What is the order of magnitude of the diameter of the Earth?
1 × 103 m
1 × 105 m
1 × 107 m
1 × 109 m
An object weighs 9.6 N on the Moon. The gravitational field strength on the Moon is 1.6 N/kg. What is the mass of the object when it is brought to the Earth?
0.4 kg
6.0 kg
8.0 kg
11.2 kg
The diagram below shows a lorry. What is the best position for its centre of gravity and why is it placed there?
The centre of gravity should be as high as possible so that the lorry is more stable
The centre of gravity should be as high as possible so that the lorry can accelerate more rapidly
The centre of gravity should be as low as possible so that the lorry is more stable
The centre of gravity should be as low as possible so that the lorry can accelerate more rapidly
Boiling and evaporation are different processes. Which statement is not correct?
Boiling occurs throughout the entire liquid but evaporation only occurs at the surface.
When a boiling liquid is heated its temperature remains constant.
Evaporation can only occur when the temperature of the liquid is high enough.
Evaporation causes the temperature of a liquid to fall.
Blocks of gold are made by pouring hot, melted gold into moulds. The gold cools to its melting point and begins to solidify. As it solidifies, its temperature
stays constant and energy is lost from the gold.
stays constant and no energy is lost from the gold.
decreases and energy is lost from the gold.
decreases and no energy is lost from the gold.
The rate of energy transfer by heat radiation is affected by the colour and texture of a surface. Which surface is the best absorber and best emitter of heat radiation?
best absorber (dull black) best emitter ( dull black)
best absorber (dull black) best emitter (shiny black)
best absorber (dull white) best emitter ( shiny white )
best absorber (shiny white) best emitter ( shiny white )
A lamp is placed at the bottom of a pool. Three light rays emerging from the lamp are shown below. Which of the marked angles is the critical angle for the light?
A
B
C
D
Which of the following correctly describes the image formed by a thin converging lens when used as a magnifying glass?
real, upright and diminished
real, inverted and magnified
virtual, upright and magnified
virtual, inverted and diminished
Radio waves, visible light and X-rays are parts of the electromagnetic spectrum. What is the correct order of increasing wavelength? (Shortest to Longest)
visible light -> radio waves ->X-rays
visible light -> X-rays -> radio waves
X-rays -> visible light ->radio waves
X-rays -> radio waves -> visible light
A surf-board moves at a speed of 5 m/s on the crest of a wave. The distance between successive wave crests is 10 m. What is the frequency of the wave motion?
0.5 Hz
2 Hz
5 Hz
10 Hz
A loud sound is made in front of a tall building. An echo is heard 4 seconds after the sound is produced. How far away is the building from where the sound is made if the speed of sound in air is 320 m/s?
80 m
160 m
640 m
1280 m
The diagram below shows identical lamps X and Y connected in series with a battery. The lamps light with normal brightness. A third identical lamp Z is connected in parallel with lamp X. What happens to the brightness of lamp Y?
brighter than normal
normal
dimmer than normal
very dim (cannot be seen)
The diagram below shows a simple d.c. circuit. The resistance of the three resistors X, Y and Z are equal. The current in Y is
smaller X and larger than Z.
smaller than X and equal to Z.
larger than X and larger than Z.
larger than X and larger than Z.
A potential difference of 4 V drives a current of 3 A through a resistor. How much electrical energy is converted into heat in 10 s?
12 J
30 J
40 J
120 J
A person uses a 3 kW electric fire for 2 hours and a 2 kW heater for 4 hours. What is the total cost if the price of electrical energy is 5 cents per unit (kilowatt-hour)?
30 cents
40 cents
60 cents
70 cents
Which statement is correct when the potential difference (p.d.) across a component in a circuit is 1 V?
1 C of charge is driven through the component in one second.
1 J of work is done in driving a unit charge through the component.
1 J of work is done in driving unit current through the component.
1 W of power is produced in driving a unit charge through the component.
A 1.8 V power supply is connected to a circuit of three 6.0 Ω resistors
What is the potential difference across XY?
0.30 V
0.60 V
1.2 V
1.8 V
