IGCSE Physics 0625 Paper 12, May/June 2023

Which single apparatus is used to find the volume of a solid cube and which single apparatus is used to find the volume of a quantity of liquid?

The speed–time graph represents a short journey. Which distance–time graph represents the same journey?

The graph represents the motion of a car. How far has the car moved between $0$ and $5\text{ s}$? A $2\text{ m}$ B $10\text{ m}$ C $25\text{ m}$ D $50\text{ m}$

Which statement about mass or weight is not correct? A Masses can be compared using a balance. B Mass is a force. C Weights can be compared using a balance. D Weight is a force.

Which two quantities must be known to determine the density of a material? A mass and area B mass and volume C weight and area D weight and volume

Two boys are sitting on a see-saw. The see-saw is in equilibrium and remains horizontal. What affects the moment of each boy about the pivot? A his distance from the pivot only B his height above the ground and his weight C his weight only D his weight and distance from the pivot

A uniform metre rule is pivoted in equilibrium at the $50\text{ cm}$ mark. A mass of $25\text{ g}$ is placed at the $30\text{ cm}$ mark on the rule. What is the smallest mass that can be placed on the rule to restore equilibrium? A $5\text{ g}$ B $10\text{ g}$ C $15\text{ g}$ D $25\text{ g}$

A uniform beam XY is $100\text{ cm}$ long and weighs $4.0\text{ N}$. The beam rests on a pivot $60\text{ cm}$ from end X. A load of $8.0\text{ N}$ hangs from the beam $10\text{ cm}$ from end X. The beam is kept balanced by a force $F$ acting on the beam $80\text{ cm}$ from end X. What is the magnitude of force $F$? A $8.0\text{ N}$ B $18\text{ N}$ C $22\text{ N}$ D $44\text{ N}$

Three children’s toys, X, Y and Z, are the same size and shape. They have weights at different positions inside so that the position of the centre of gravity of each toy is different. Each toy’s centre of gravity is marked P. Which toy is the most stable and which toy is the least stable when balanced in the positions shown?

The diagram shows the energy stores for a mobile (cell) phone and how the energy is transferred between stores. What describes how the chemical energy is transferred? A electrical work done B mechanical work done C electromagnetic waves D sound waves

A moving object is brought to rest by a resistive force of $50\text{ N}$ over a distance of $5.0\text{ m}$. What is the work done by the force? A $0.10\text{ J}$ B $10\text{ J}$ C $55\text{ J}$ D $250\text{ J}$

Which two physical quantities must be used to calculate the power developed by a student running up a flight of steps? A force exerted and the vertical height of the steps only B force exerted and the time taken only C work done and the vertical height of the steps only D work done and the time taken only

A rectangular marble block has dimensions $1\text{ m}$ by $1\text{ m}$ by $5\text{ m}$ and weighs $125000\text{ N}$. The marble block is stored with the long side resting on the ground, as in diagram 1. What is the change in the pressure on the ground due to the block when the block is stored as in diagram 2 rather than diagram 1? A a decrease of $25000{\text{ N/m}}^2$ B an increase of $100000{\text{ N/m}}^2$ C an increase of $125000{\text{ N/m}}^2$ D no change

Four students describe the phrase ‘absolute zero’ during a lesson on the particle model. Which student is correct? A This is the lowest possible temperature. B Particles in a solid start vibrating. C Particles do not have any weight. D Particles have the least gravitational potential energy.

At the surface of a liquid, the more energetic molecules can escape from the liquid into the atmosphere. Which name is given to this process? A boiling B condensation C evaporation D melting

A teacher puts some cold water in a test-tube. She holds the bottom of the test-tube while heating the top. The water at the top boils but she continues to hold the test-tube as the bottom remains cold. Which conclusion about water is made from this experiment? A Water is a bad conductor. B Water is a bad convector. C Water is a good conductor. D Water is a good convector.

The diagram shows a wave. What are the amplitude and the wavelength of this wave?

A light ray strikes a plane mirror and is reflected. Which angle is always equal in size to the angle of reflection? A the angle between the incident ray and the mirror B the angle between the incident ray and the normal to the mirror C the angle between the reflected ray and the mirror D the angle between the reflected ray and the incident ray

The diagram shows two diverging rays of light passing through a lens and emerging parallel to each other. Which labelled distance is the focal length of the lens?

A beam of light consists of yellow and blue light. The beam of light is incident on a glass prism. Which diagram is correct?

The two devices shown use different types of electromagnetic waves. Which types of waves are used in these devices?

A boy shouts and hears the echo from a tall building $2.2\text{ s}$ later. The speed of sound in air is $330\text{ m / s}$. How far away from the boy is the building? A $150\text{ m}$ B $300\text{ m}$ C $360\text{ m}$ D $730\text{ m}$

The magnetic field of a bar magnet can be represented by magnetic field lines. Which diagram shows two magnetic field lines correctly?

A plastic rod is rubbed with a dry cloth. The rod becomes positively charged. Why has the rod become positively charged? A It has gained electrons. B It has gained neutrons. C It has lost electrons. D It has lost neutrons.

Which statement about electric current in a conductor is correct? A In a d.c. circuit, the electric current gradually decreases along the conductor. B In a d.c. circuit, the free electrons flow back and forth. C In an a.c. circuit, the electric current remains exactly the same all the time. D In an a.c. circuit, the flow of charge changes direction continually.

Which circuit can be used to measure the resistance of a resistor?

A lamp rated $12\text{ V}$, $2.0\text{ A}$ is switched on for $60\text{ s}$. How much energy is transferred? A $0.40\text{ J}$ B $10\text{ J}$ C $360\text{ J}$ D $1400\text{ J}$

The circuit diagram shows a battery connected to two resistors. Four labelled ammeters are connected into the circuit. Which ammeter shows the largest reading?

Two lamps are connected in parallel. Which switches must be closed so that both lamps light? A ${\text{S}}_1$ and ${\text{S}}_2$ only B ${\text{S}}_1$ and ${\text{S}}_3$ only C ${\text{S}}_2$ and ${\text{S}}_3$ only D ${\text{S}}_1$, ${\text{S}}_2$ and ${\text{S}}_3$

Which statement about electrical safety is correct? A If a device is double insulated, it does not need a fuse. B A device that has a normal operating current of $3.0\text{ A}$ must be protected by a $3.0\text{ A}$ fuse. C Switches must always be connected into the live supply wire. D The metal casing of an electrical device must be connected to the neutral wire.

A student investigates the output voltage induced across a coil of wire by a bar magnet. When will the induced voltage have the greatest value? A The student slowly moves the bar magnet into the coil of wire. B The student leaves the bar magnet stationary in the coil of wire. C The student quickly removes the bar magnet from the coil of wire. D The student places the bar magnet at rest outside the coil of wire.

In which device is the magnetic effect of a current not used? A electromagnet B loudspeaker C potential divider D relay

The diagram represents the transmission of electricity from a power station to homes that are many kilometres away. Two transformers are labelled X and Y. What type of transformers are X and Y?

Which diagram represents the positions of the charged particles of an atom?

The table shows the composition of three different nuclei.

Which nuclei are isotopes of the same element? A X, Y and Z B X and Y only C X and Z only D Y and Z only

A sample of a radioactive isotope emits $9600\alpha \text{-particles per second}$. After $40\text{ hours}$ the rate of emission has fallen to $600\alpha \text{-particles per second}$. What is the half-life of this isotope? A $4.0\text{ hours}$ B $8.0\text{ hours}$ C $10\text{ hours}$ D $20\text{ hours}$

Which row states a harmful effect and a beneficial effect of ionising radiation on living things?

Which statement about the Solar System is correct? A All the planets are rocky. B Only the Earth has a moon. C Pluto is a dwarf planet. D There are many stars in the Solar System.

The graph shows the energy radiated by the Sun at different wavelengths. Most of the energy is radiated in just three parts of the electromagnetic spectrum, labelled P, Q and R. Which parts of the electromagnetic spectrum are P and R?

An astronomer observes redshift in the light from a distant galaxy. Which statement about redshift is correct? A It is the decrease in the observed wavelength of red light emitted from receding galaxies. B It is evidence that the Universe is contracting and supports the Big Bang Theory. C It is evidence that the Universe is expanding and supports the Big Bang Theory. D Redshift is when light from receding galaxies appears blue.