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A student uses a ruler to measure the length of a spring. His results are shown.
14.9 cm 14.8 cm 14.8 cm 14.7 cm
What is the average length of the spring to three significant figures?
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The velocity–time graph for a car is shown.
What is the distance travelled by the car in 35 s?
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Which statements about weight are correct?
1. Weight is the quantity of matter in an object.
2. Weight is the force due to gravity acting on an object.
3. Weight is measured in kilograms.
4. Weight is measured in newtons.
510
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540
The diagram shows four pieces of laboratory apparatus.
Which pieces of apparatus are used to find the density of a liquid?
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A spanner is used to tighten a nut on a bicycle wheel. A force $F$ is needed.
How can the force $F$ be reduced?
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On which ball is a non-zero resultant force acting?
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The diagram shows a bus with an upper floor and a lower floor.
Passengers on the upper floor are not allowed to stand while the bus is moving. Standing passengers make the bus less stable.
Why is this?
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An object falls towards the Earth's surface. What happens to the gravitational potential energy and to the kinetic energy of the object?
[Table 1]
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In some situations, a force does work.
Which set of conditions increases the quantity of work done by the force?
[Table_1]
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The diagram shows a simple mercury barometer.
Which labelled distance decreases when atmospheric pressure increases?
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The pressure of a fixed mass of gas in a cylinder is measured. The volume of the gas in the cylinder is slowly decreased. The temperature of the gas does not change.
Which graph shows how the pressure of the gas changes during this process?
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A liquid is evaporating. What does it lose from its surface?
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The diagram shows a thermometer calibrated in degrees Celsius. What are the values of the lower fixed point and of the upper fixed point on the Celsius scale?
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Which statements does the term 'melting point' refer to? 1. the temperature at which a liquid changes to solid without a change in temperature 2. the temperature at which a solid changes to liquid without a change in temperature 3. the temperature at which a liquid changes to vapour without a change in temperature 4. the temperature at which a vapour changes to liquid without a change in temperature
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Which piece of equipment is designed to produce a type of electromagnetic wave?
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How is energy transferred from the Sun to the Earth?
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Wavefronts are incident on a boundary. What is needed for the wave to refract at the boundary?
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A 60° glass prism disperses white light as shown.
The spectrum can be seen emerging from the prism.
Which spectrum shows the colours in the correct order?
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The diagram shows an object in front of a plane mirror.
At which labelled position is the image of the object formed?
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The diagram shows the action of a thin converging lens on two rays of light. The rays are from the top of an object O. An inverted image I is formed. Which name is given to the distance RS?
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Visible light has a frequency of approximately $5.0 \times 10^{14}$ Hz.
M and N are two other types of electromagnetic radiation.
The frequency of M is $5.0 \times 10^6$ Hz.
The frequency of N is $5.0 \times 10^{15}$ Hz.
Which types of radiation are M and N?
[Table_1]
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Which wave is not an electromagnetic wave?
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A 100 m race is started by firing a gun. The gun makes a bang and a puff of smoke at the same time.
When does the finishing judge see the smoke and when does he hear the bang?
[Table_1]
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Copper wires are used to connect an electric circuit.
Which particles flow in the wires when the circuit is switched on?
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A student is investigating a resistance wire.
She measures the current in a 50 cm length of resistance wire.
The student repeats the experiment using a 100 cm length of the same resistance wire.
What is the effect of this change on the current in the circuit and on the resistance of the wire?
[Table_1]
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A plastic rod is rubbed with a dry woollen cloth. The rod becomes positively charged. Which statement is correct?
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The diagram shows the circuit that a student uses to determine the resistance of resistor R.
Which row describes meter 1 and meter 2?
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The diagram shows a potential divider circuit.
The temperature of the thermistor increases.
What happens to the resistance of the thermistor, and what happens to the reading on the voltmeter?
[Table_1]
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The diagram shows a series circuit containing a fixed voltage power supply, a thermistor, a light-dependent resistor (LDR) and a lamp.
Which set of conditions makes the lamp brightest?
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The diagram shows a circuit containing a cell, a lamp and two ammeters.
The current reading on ammeter 2 is 0.20 A.
What is the name for this type of circuit and what is the reading on ammeter 1?
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The circuit connecting a room heater to the mains electricity supply has a fuse in it.
The fuse melts and switches off the circuit.
Why does the wire in the fuse melt?
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Four small compasses are placed around a solenoid.
A current is now switched on in the solenoid.
Which diagram shows possible new directions of the compass needles?
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Which metal is used for the core of a transformer?
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The diagram shows the design of a type of relay.
Two parts are labelled N and P.
From which metal is N made and from which metal is P made?
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A nuclide of cobalt contains 27 protons and 32 neutrons.
Which symbol represents this nuclide?
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In the processes shown, X and Y are elements.
Which process describes $\alpha$-decay?
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A high-voltage power supply is connected to a metal grid and a wire, as shown. When the radioactive source is placed close to the grid, sparks are observed in the position indicated. Which statement explains why the sparks are formed?
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A radioactive substance has a half-life of 6 hours.
It has an initial rate of emission of 120 counts per second.
How long will it take for this rate of emission to fall to 30 counts per second?
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