Physics 0625/11 October/November 2022: question paper and mark scheme

Question

The times for 10 swings of a pendulum are measured. time for 10 measurement swings / s 1 10.12 2 10.48 3 10.24 What is the average time for one swing? A 1.028 s B 1.036 s C 1.042 s D 10.28 s

Question

A car starts from rest. The table shows the readings from its speedometer every 10 s. time / s 0 10 20 30 40 50 60 speed 0 4 8 12 12 12 12 m/ s Which row describes the car’s motion in the first 30 seconds and in the last 30 seconds? motion during first 30 s motion during last 30 s A non-zero acceleration at rest B zero acceleration constant speed C zero acceleration at rest D non-zero acceleration constant speed

Question

A stone is placed on a balance as shown. stone 120 g balance Which row gives the mass and weight of the stone? mass weight A 120 g 1.2 N B 120 g 1200 N C 1.2 N 120 g D 1200 N 120 g

Question

The diagram shows the dimensions of a solid rectangular block of metal of mass m. q p r Which expression is used to calculate the density of the metal? A m (p × q) B m (p × q × r ) C m×p×q D m×p×q×r

Question

A force F acts on an object at a distance x from a pivot. Which two changes both increase the moment of the force about the pivot? change 1 change 2 A decrease F decrease x B decrease F increase x C increase F decrease x D increase F increase x

Question

The diagrams represent the only two forces acting on an object. Which object could be moving to the right at constant speed? A B 1.0 N 1.0 N 1.0 N 1.0 N C D 1.0 N 2.0 N 2.0 N 1.0 N

Question

The diagram shows a uniform rod with its midpoint on a pivot. Two weights X and Y are hung from the rod. The rod is in equilibrium. rod X pivot Y Which statement is correct? A The forces at X and Y have different values. B There is a resultant turning effect on the rod. C The resultant force on the rod is zero. D The rod does not have a centre of mass.

Question

Brakes are used to slow down a moving car. Into which form of energy is most of the kinetic energy converted as the car slows down? A chemical B elastic C thermal D sound

Question

What is a disadvantage of nuclear fission as a source of energy? A Nuclear power stations are expensive to build. B Nuclear power stations are unreliable. C Nuclear power stations can only provide small quantities of energy. D Nuclear power stations release large quantities of carbon dioxide into the atmosphere.

Question

The statements describe what happens when the power of a machine is increased. 1 The work done in a given time decreases. 2 The work done in a given time increases. 3 The time taken to do a given quantity of work decreases. 4 The time taken to do a given quantity of work increases. Which statements are correct? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

Question

Which quantities, in addition to the acceleration of free fall g, affect the pressure at the bottom of a pond of water? A the density of the water and the depth of the pond only B the density of the water and the surface area of the pond only C the depth of the pond and the surface area of the pond only D the depth of the pond, the density of the water and the surface area of the pond

Question

A fixed mass of gas is trapped in a container. The temperature of the gas is increased but the volume of the gas is kept constant. fixed mass of gas How does this change affect the average kinetic energy of the molecules and the pressure on the walls of the container? average pressure kinetic energy A increases increases B stays the same increases C increases decreases D decreases increases

Question

Which row correctly describes the arrangement and the motion of particles in a solid? arrangement motion of particles of particles A far apart moving randomly from place to place B far apart vibrating about one position C tightly packed moving randomly from place to place D tightly packed vibrating about one position

Question

What is the temperature difference between the fixed points on the °C temperature scale? A 10 °C B 100 °C C 110 °C D 120 °C

Question

In the diagram, each box represents a state of matter and each arrow represents a change of state. P Q solid liquid gas R S Which row correctly identifies the changes of state? P Q R S A freezing condensation boiling melting B boiling melting condensation freezing C freezing condensation melting boiling D condensation freezing melting boiling

Question

Four thermometers, with their bulbs painted different colours, are placed at equal distances from a radiant heater. Which thermometer shows the slowest temperature rise when the heater is first switched on? A dull black B dull white C shiny black D shiny white

Question

Which method of transfer of thermal energy is caused by changes in density? A conduction B convection C evaporation D radiation

Question

The diagrams show two sets of wavefronts in a ripple tank. wave wave direction direction barrier shallow water A student makes two statements about the waves. 1 When the waves reflect from the barrier the direction changes but the wavelength remains the same. 2 When the waves refract as they enter the shallow water the direction remains the same, but the wavelength changes. Which statements are correct? A statement 1 and statement 2 B statement 1 only C statement 2 only D neither statement 1 nor statement 2

Question

What is the correct order of the colours in a spectrum of white light? A blue → green → yellow B blue → yellow → green C yellow → blue → green D green → blue → yellow

Question

An object is placed 30 cm in front of a plane mirror. Which statement describes the image of the object? A The image is the same size and 30 cm from the object. B The image is the same size and 60 cm from the object. C The image is smaller and 30 cm from the object. D The image is smaller and 60 cm from the object.

Question

A ray of light is shone onto the surface of a mirror. 2 3 1 4 Which two angles represent the angle of incidence and the angle of reflection? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

Question

The diagram shows the electromagnetic spectrum. The numbers indicate the approximate wavelength at the boundaries between the various regions of the spectrum. For a device to be able to make use of electromagnetic radiation, it needs an aerial of approximately the same size as the wavelength of the radiation it is designed to work with. P Q R S T U V 1m 10–3 m 7 × 10–7 m 4 × 10–7 m 10–8 m 10–11 m Which statement is correct? A A mobile phone uses radiation from region P. B A television satellite dish uses radiation from region Q. C The receptor cells in an eye use radiation from region R. D The remote controller for a television uses radiation from region U.

Question

Microwaves and X-rays are regions of the electromagnetic spectrum. Which statement about microwaves and X-rays is correct? A Microwaves and X-rays have the same frequency. B Microwaves and X-rays travel at the same speed in a vacuum. C Microwaves have a shorter wavelength than X-rays. D Microwaves travel at a lower speed than X-rays in a vacuum.

Question

An observer stands at the finish line of a 100 m race. He wants to time the winner’s run. He starts his stop-watch as soon as he sees the smoke from the starting gun instead of when he hears the bang. What is the reason for doing this? A Light travels much faster than sound. B There is a risk he might respond to an echo from a wall. C Humans react slower to sound than to light. D Humans react more quickly to sound than to light.

Question

Which description of a current in a metal is correct? A a flow of electrons B a flow of molecules C a flow of positive atoms D a flow of protons

Question

The diagram shows a circuit containing a variable resistor connected to a variable power supply. power supply The table shows the currents for different values of the potential difference (p.d.) and the resistance. p.d. / V resistance / Ω current 3.6 12 I1 1.2 12 I2 3.6 6 I3 What is the order of the currents from smallest to largest? A I1 → I2 → I3 B I1 → I3 → I2 C I2 → I1 → I3 D I3 → I1 → I2

Question

The e.m.f. of the cell in this circuit is 1.5 V. What does e.m.f. stand for? A electromagnetic field B electromagnetic force C electromotive field D electromotive force

Question

A negatively charged plastic rod P is placed above a positively charged plastic rod Q. P – – – – – Q + + + + + What are the directions of the electrostatic forces on rod P and on rod Q? electrostatic force electrostatic force on rod P on rod Q A downwards downwards B downwards upwards C upwards downwards D upwards upwards

Question

A student finds the resistance of a resistor. Which circuit is used to measure the potential difference (p.d.) across the resistor and the current in it? A B C D V A V A A A V V

Question

The circuit diagram shows a variable potential divider. P Q slider V The slider is moved from P towards Q. What happens to the reading on the voltmeter and to the brightness of the lamp? reading on brightness voltmeter of lamp A decreases decreases B decreases increases C increases decreases D increases increases

Question

The diagram shows a circuit containing a cell, a variable resistor and two bulbs, P and Q. P Q The resistance of the variable resistor is increased. What happens to the brightness of each bulb? brightness of bulb P brightness of bulb Q A dimmer dimmer B dimmer remains the same C remains the same dimmer D remains the same remains the same

Question

Which diagram shows a circuit containing a battery, a fuse and a buzzer? A B C D

Question

Why is a fuse used in an electric circuit? A to increase the circuit resistance B to prevent short circuits C to reduce the power loss D to stop the cables from overheating

Question

The diagram represents a transformer. core primary coil Which row shows materials suitable for making the core and the primary coil? core primary coil A iron copper B iron plastic C steel copper D steel plastic

Question

The diagrams show the magnetic field lines around a wire carrying a current, I. 1 2 I I 3 4 I I Which diagrams are correct? A 1 only B 2 and 3 C 4 only D 1 and 3

Question

A wire is placed between the poles of a magnet. wire N S magnet Which statements are correct? 1 An a.c. current in the wire causes a changing force on it. 2 A downward d.c. current in the wire causes a constant force on it. 3 An upward d.c. current in the wire causes a constant force on it. A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3 7

Question

The nuclide notation for the isotope lithium-7 is 3Li . How many neutrons are there in an atom of lithium-7? A 3 B 4 C 7 D 10

Question

A radioactive material is emitting α-particles. The radioactive material is used in a demonstration in a school laboratory experiment. Which safety precaution must be taken by the person carrying out the experiment? A Handle the source with tongs. B Place the source on a heat-proof mat. C Surround the experiment with a lead screen. D Wear goggles.

Question

The graph shows how the count rate from a radioactive isotope changes with time. 60 count rate 50 counts / s 40 30 20 10 0 0 1 2 3 4 5 6 time / s What is the half-life of this isotope? A 2.0 s B 6.0 s C 12 s D 53 s

Question

A student measures the count rate near a radioactive source using a detector of ionising radiation. The diagram shows the arrangement. radioactive source counter detector 75 The counter reads 75 counts per minute. When the source is taken away, the reading on the counter decreases to 5 counts per minute. What was the rate of emission from the radioactive source when the counter reading is corrected for background radiation? A 5 counts per minute B 15 counts per minute C 70 counts per minute D 80 counts per minute