Physics 0625/21 May/June 2022: question paper and mark scheme

Question

Which measuring devices are most suitable for determining the length of a swimming pool and the thickness of aluminium foil? length of a swimming pool thickness of aluminium foil A ruler measuring cylinder B tape measure micrometer screw gauge C tape measure ruler D ruler micrometer screw gauge

Question

A man stands next to a railway track. A train travelling at 40 m / s takes 2.0 s to pass the man. What is the length of the train? A 20 m B 38 m C 40 m D 80 m

Question

A speed–time graph is used to describe the motion of an object. Which quantities are calculated from the gradient of the graph and from the area under the graph? gradient of the graph area under the graph A acceleration distance travelled B acceleration total journey time C distance travelled acceleration D total journey time distance travelled

Question

On the Moon, all objects fall with the same acceleration. Which statement explains this? A On the Moon, all objects have the same weight. B The Moon has a smaller gravitational field strength than the Earth. C The weight of an object is directly proportional to its mass. D The weight of an object is inversely proportional to its mass.

Question

A measuring cylinder contains 30 cm3 of a liquid. cm3 50 40 30 20 10 balance Some more of the liquid is added until the liquid level reaches the 50 cm3 mark. The reading on the balance increases by 30 g. What is the density of the liquid? A 0.60 g / cm3 B 0.67 g / cm3 C 1.5 g / cm3 D 1.7 g / cm3

Question

An object on the end of a string moves in a clockwise circular path at constant speed. The diagram shows the object as viewed from above. What is the direction of the resultant force on the object when it is in the position shown? string A B object D C

Question

A beam is pivoted at one end, as shown. 40 cm beam X pivot 6.0 N The beam weighs 6.0 N and its weight acts at a point X 40 cm from the pivot. A force of 4.0 N is applied to the beam causing it to balance horizontally. In which direction and where is the 4.0 N force applied? A vertically downwards at 20 cm to the left of X B vertically downwards at 20 cm to the right of X C vertically upwards at 20 cm to the left of X D vertically upwards at 20 cm to the right of X

Question

On the diagram shown, what is the magnitude of the resultant force of the two vectors? scale 2.0 N 6.0 N 8.0 N A 2.0 N B 7.0 N C 10 N D 14 N

Question

Three situations are listed. 1 An object has a resultant force acting on it. 2 A moving object experiences an impulse. 3 An object is decelerating. In which situations is the momentum of the object changing? A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

Question

A ball of mass 0.16 kg is moving forwards at a speed of 0.50 m / s. A second ball of mass 0.10 kg is stationary. The first ball strikes the second ball. The second ball moves forwards at a speed of 0.50 m / s. What is the speed of the first ball after the collision? A 0.0 m / s B 0.19 m / s C 0.31 m / s D 0.50 m / s

Question

A mass hangs vertically from a spring. The mass is raised to a point P and is then released. The mass oscillates repeatedly between point P and a lower point Q. Which energies alternately increase and decrease throughout the oscillations? A gravitational potential energy, kinetic energy and elastic energy B gravitational potential energy and kinetic energy only C gravitational potential energy, kinetic energy and internal energy D internal energy and elastic energy

Question

A car has 620 kJ of kinetic energy. The car brakes and stops in a distance of 91 m. What is the average braking force acting on the car? A 0.15 N B 6.8 N C 6800 N D 56 000 N

Question

The diagram shows a deep reservoir formed by a dam. water dam X On what does the pressure at X depend? A the depth of the water at X B the length of the reservoir C the surface area of the water D the thickness of the dam wall

Question

A sealed rigid container has a fixed volume. The container is filled with air. The container is placed in a freezer cabinet and the temperature of the air in the container decreases. Which row correctly describes what happens to the air in the container? average distance average speed between air particles of air particles A decreases increases B decreases decreases C no change increases D no change decreases

Question

Two open containers are filled with water at room temperature. The containers have different shapes. container 1 container 2 From which container does the water evaporate at the greater rate and how can the rate of evaporation be increased? container with the greater how the rate of rate of evaporation evaporation can be increased A 1 decrease the water temperature B 1 increase the water temperature C 2 decrease the water temperature D 2 increase the water temperature

Question

The diagram shows a liquid-in-glass thermometer. °C –10 0 10 20 30 40 50 60 70 80 90 100 110 A student wishes to check the marking of the upper fixed point on this thermometer. What should she do? A Put the bulb in a beaker of boiling sea water. B Put the bulb in a beaker of boiling pure water. C Put the bulb in a beaker of ice and salt. D Put the bulb in a beaker of pure melting ice.

Question

Water in a beaker gains thermal energy at a rate of 3000 W. The water is at its boiling point. The specific latent heat of vaporisation of water is 2260 J / g. How long does it take for 250 g of the water to vaporise? A 12 s B 188 s C 332 s D 750 s

Question

A glass contains an iced drink on a warm and humid day. Water starts to form on the outside of the glass. What is the name of the effect by which the water forms? A condensation B conduction C convection D evaporation

Question

One end of a copper bar is heated to a high temperature. Which mechanism is responsible for the transfer of thermal energy to the other end of the copper bar? A the lattice vibrations of copper ions only B the lattice vibrations of copper ions and the movement of high energy electrons along the bar C the movement of high energy copper ions along the bar D the movement of high energy electrons along the bar only

Question

The diagram shows a convection current caused by a piece of ice placed in a beaker of water at room temperature. ice Q P Which row correctly compares the temperatures and densities at water points P and Q? temperature at P density at P A higher than at Q higher than at Q B higher than at Q lower than at Q C lower than at Q higher than at Q D lower than at Q lower than at Q

Question

The diagram shows a wave. 2.0 displacement / cm 1.0 0 0 4.0 8.0 12.0 16.0 20.0 24.0 28.0 –1.0 distance / cm –2.0 Which row is correct? amplitude of wavelength of the wave / cm the wave / cm A 1.0 4.0 B 1.0 8.0 C 2.0 4.0 D 2.0 8.0

Question

A sound wave is created by a loudspeaker that vibrates backwards and forwards 96 000 times per minute. The speed of sound is 320 m / s. What is the wavelength of the sound wave? A 0.20 m B 5.0 m C 300 m D 18 000 m

Question

A card is placed in front of a plane mirror so that its label is facing the mirror, as shown. plane mirror label card observer The label is shown. How does the image of the label formed by the mirror appear to the observer? A B C D

Question

A thin converging lens can produce both real and virtual images. Which row describes a real and a virtual image? real image virtual image A rays converge to form the image image can be projected onto a screen B rays converge to form the image image cannot be projected onto a screen C rays diverge to form the image image can be projected onto a screen D rays diverge to form the image image cannot be projected onto a screen

Question

The speed of light in air is 3.0 × 108 m / s. The critical angle for light in a transparent plastic material placed in air is 37°. What is the speed of light in the plastic material? A 1.8 × 108 m / s B 2.4 × 108 m / s C 3.8 × 108 m / s D 5.0 × 108 m / s

Question

Which part of the electromagnetic spectrum is used by a remote controller for a television? A infrared waves B microwaves C radio waves D visible light

Question

Which statement correctly compares radio waves and X-rays? A Radio waves have a longer wavelength and a greater speed in a vacuum. B Radio waves have a longer wavelength and the same speed in a vacuum. C Radio waves have a shorter wavelength and a greater speed in a vacuum. D Radio waves have a shorter wavelength and the same speed in a vacuum.

Question

A student counts how many iron pins an electromagnet picks up when its power supply is switched on. Then, she counts how many pins are picked up when the power supply is switched off. core d.c. power d.c. power supply on supply off iron pins She repeats the experiment using cores made of different materials. The results are shown. Which core is made out of soft iron? pins picked up with pins picked up with the power supply on the power supply off A 0 0 B 2 7 C 8 5 D 12 0

Question

A plastic rod is brought near to a small plastic sphere suspended from a stand. The sphere is repelled by the rod. Why is this? A The rod and the sphere have like charges. B The rod and the sphere have unlike charges. C The rod is charged and the sphere is uncharged. D The rod is uncharged and the sphere is charged.

Question

Which unit is equivalent to a volt (V)? A A / Ω B J/C C J/s D W/C

Question

A resistor converts 360 J of energy when there is a current of 3.0 A in it. The potential difference across the resistor is 6.0 V. For how long is there this current in the resistor? A 0.05 s B 20 s C 180 s D 720 s

Question

The four circuits shown each contain four diodes. In which circuit is the direction of the current in the resistor always from the red terminal to the black terminal? A B 12 V 12 V red black red black terminal terminal terminal terminal C D 12 V 12 V red black red black terminal terminal terminal terminal

Question

The diagram shows a circuit of six identical lamps connected to a battery. S Q P T R U Which lamps are brightest? A P only B Q and R only C S, T and U only D P, Q, R, S, T and U are equally bright

Question

A digital circuit is made of two logic gates. W Y Z X Which row is correct for this digital circuit? W X Y Z A 0 0 1 0 B 0 1 0 1 C 1 0 1 0 D 1 1 0 1

Question

A magnet is dropped vertically through a solenoid. This induces magnetic poles at both ends of the solenoid. N X X S N S N S diagram 1 diagram 2 diagram 3 Which magnetic poles are induced at position X in diagram 1 and diagram 3? diagram 1 diagram 3 A N pole N pole B N pole S pole C S pole N pole D S pole S pole

Question

Which transformer can change a 240 V a.c. input into a 15 V a.c. output? A B 800 turns 40 turns 1000 turns 25 turns C D 2400 turns 15 turns 1200 turns 75 turns

Question

What is the purpose of the split-ring commutator in an electric motor? A to ensure that the magnetic field in the motor changes direction every half rotation B to ensure that the magnetic field in the motor stays in the same direction at all times C to ensure that the turning effect on the motor changes direction every half rotation D to ensure that the turning effect on the motor stays in the same direction at all times

Question

How do the sizes of the two nuclei produced in a nuclear fission reaction compare to the size of the original nucleus? A both larger than the original nucleus B one larger and one smaller than the original nucleus C both smaller than the original nucleus D one smaller and one the same size as the original nucleus

Question

Which statement about the radioactive decay of a substance is correct? A It cannot be predicted when a particular nucleus will decay. B Placing a radioactive substance inside a lead-lined box prevents it from decaying. C The decay always produces poisonous gases. D The rate of decay increases if the substance is dissolved in water.

Question

The diagram shows a stream of β-particles travelling in a line that passes between the poles of a magnet. N -particles S In which direction will the β-particles be deflected by the magnet? A towards the N pole B towards the S pole C into the page D out of the page