IGCSE Physics 0625 Paper 13, Oct/Nov 2025

A girl uses a ruler to measure the length of a metal rod. The end of the ruler is damaged, so she places one end of the rod at the $1\text{ cm}$ mark, as shown. How long is the metal rod? A $43\text{ mm}$ B $46\text{ mm}$ C $53\text{ mm}$ D $56\text{ mm}$

Four balls with different masses are dropped from the heights shown. Air resistance can be ignored. Which ball has the greatest average speed? A $4.0\text{ kg}$, $1.0\text{ m}$ B $3.0\text{ kg}$, $2.0\text{ m}$ C $2.0\text{ kg}$, $3.0\text{ m}$ D $1.0\text{ kg}$, $4.0\text{ m}$

An arrow travels horizontally in a straight line at constant speed. In which direction does the weight of the arrow act?

Which piece of equipment is useful in determining the density of an irregularly-shaped stone? A stop-watch B metre ruler C measuring cylinder D voltmeter

Four load–extension graphs are shown for a spring. Which graph shows that the load is proportional to the extension?

A man holds a ladder in four different positions, pivoting around his shoulder. The weight of the ladder causes a moment about the man’s shoulder. In which position is the moment greatest?

A child has four blocks of wood in the shapes of the letters A, M, T and X. The blocks have equal heights and thicknesses. At their widest parts, their widths are equal. The child stands the four blocks the right way up on a flat table. Which block is most likely to fall over when the block is slightly knocked? A letter A B letter M C letter T D letter X

When an object falls freely due to gravity, energy that was stored as gravitational potential energy is transferred to the kinetic energy store. How is the energy transferred in this process? A by electrical work B by electromagnetic waves C by heating D by mechanical work

A woman pushes a mower across a lawn. Which quantities does the woman use to calculate the work she does? A distance, force and time B distance and force only C distance and time only D force and time only

A steel knife needs a cutting edge with a small surface area. What is the reason for this? A A small surface area increases the pressure. B A small surface area increases the density of the steel. C A small surface area prevents the cutting edge from rusting. D A small surface area prevents the knife from becoming magnetised.

When a hot gas cools, its internal energy decreases. What causes this? A a decrease in the average kinetic energy of the gas particles B a decrease in the gravitational potential energy of the gas particles C an increase in the average speed of the gas particles D an increase in the average distance of separation of the gas particles

The temperature of an object is $37{}^{\circ }\text{C}$. What is the temperature of the object in kelvin? A $-236\text{ K}$ B $7.4\text{ K}$ C $236\text{ K}$ D $310\text{ K}$

The diagram shows part of a railway track. Each section of the railway track is separated by a gap. Why are these gaps necessary? A The tracks contract on cold days. B The tracks contract on warm days. C The tracks expand on cold days. D The tracks expand on warm days.

A test-tube contains a volume of $1.0{\text{ cm}}^3$ of liquid water at a temperature of $100{}^{\circ }\text{C}$. The liquid water boils to form a volume of $1600{\text{ cm}}^3$ of steam. What is the reason for the large increase in volume? A Steam particles are bigger than water particles. B The average distance between the particles is much greater in the steam. C The particles do not move until the water turns into a gas. D There are more steam particles than there were water particles.

When a liquid is exposed to the air, the more-energetic particles escape from the surface of the liquid. What is the name of this process? A boiling B condensation C convection D evaporation

The diagram shows a hot-water tank. The tank has a heater, X, halfway up the tank. Heater X is switched on. Which row states the main processes by which thermal energy is transferred to the water above the heater and to the water below the heater?

The handle of a metal cooking pan is made from wood. What is a reason for making the handle from wood? A to increase thermal energy transfer by conduction B to increase thermal energy transfer by convection C to reduce thermal energy transfer by conduction D to reduce thermal energy transfer by convection

A student observes waves travelling across the surface of water. The diagram shows two pieces of wood resting in shallow water of constant depth. Straight parallel wavefronts approach the pieces of wood, as shown. The gap between the pieces of wood is $2.0\text{ cm}$ wide. The wavefronts are $3.0\text{ cm}$ apart. What is the appearance of the wavefronts after they pass through the gap? A semicircular and $2.0\text{ cm}$ apart B semicircular and $3.0\text{ cm}$ apart C straight and $2.0\text{ cm}$ apart D straight and $3.0\text{ cm}$ apart

P-waves and S-waves are produced in the ground during an earthquake. Which statement about these waves is correct? A Only P-waves are transverse waves. B Only P-waves are longitudinal waves. C Both P-waves and S-waves are longitudinal waves. D Both P-waves and S-waves are transverse waves.

A ray of light is incident on a plane mirror. A student measures the angle of incidence $i$ and the angle of reflection $r$. The student varies the angle of incidence and then plots a graph of $r$ against $i$. What does the graph look like?

A ray of light passes from air into a block of glass. The critical angle is ${42}^{\circ }$. Which statement is correct? A The angle of incidence is the angle between the ray of light and the surface of the glass block. B The angle of incidence is always bigger than ${42}^{\circ }$. C The angle of refraction cannot be less than ${42}^{\circ }$. D The angle of refraction is smaller than the angle of incidence.

A converging lens is used to produce a real image of a $2\text{ cm}$ high object. The image is $4\text{ cm}$ high. Which ray diagram shows how the lens forms the image?

White light can be split into different colours by passing it through a prism. What is the name of this process? A diffraction B dispersion C reflection D total internal reflection

A sound wave with a frequency of $25000\text{ Hz}$ travels through air with a speed of $340\text{ m}\mathrm{/}\text{s}$. Why can a human not hear the sound? A The frequency is too low. B The frequency is too high. C The speed is too low. D The speed is too high.

A drummer hits a drum harder to make a louder sound without changing the pitch of the sound. Which statement describes the change in properties of the sound as the drummer hits the drum harder? A Only the amplitude of the sound increases. B Only the frequency of the sound decreases. C Both the amplitude and the frequency of the sound increase. D Both the amplitude and the frequency of the sound decrease.

A metal sphere is attached to the top of an insulated rod. A negatively charged rod is held close to one side of the metal sphere. The other side of the metal sphere is earthed. Which diagram shows the distribution of charge on the metal sphere?

A student writes three statements about electric current. 1 Electric current is a flow of charge. 2 Electric current in a circuit is measured using a voltmeter. 3 The direction of an alternating current (a.c.) continually changes. Which statements are correct? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

Electromotive force (e.m.f.) is defined in terms of the energy supplied in driving which physical quantity around a complete circuit? A charge B resistance C potential difference (p.d.) D power

A student measures the resistance of a wire. Which two measurements must the student make? A length and current B potential difference (p.d.) and current C cross-sectional area and power D potential difference (p.d.) and diameter

There is a current of $2.0\text{ A}$ in a resistor of resistance $8.0\mathrm{\Omega }$. What is the potential difference (p.d.) across the resistor? A $0.25\text{ V}$ B $4.0\text{ V}$ C $8.0\text{ V}$ D $16\text{ V}$

There is a current of $2.0\text{ A}$ in a resistor for a time of $30\text{ s}$. The potential difference (p.d.) across the resistor is $12\text{ V}$. How much energy is transferred in the resistor? A $1.25\text{ J}$ B $5.0\text{ J}$ C $180\text{ J}$ D $720\text{ J}$

The circuit symbol for an ammeter is a circle with a letter A in it. The symbol for a fuse is a rectangle with a central line. Which pair of circuit symbols is also one involving a circle followed by one involving a rectangle? A a lamp and a cell B a motor and a thermistor C a switch and a heater D a voltmeter and a battery

Which component is not needed when using an appliance that is double-insulated? A earth wire B fuse C live wire D neutral wire

A vertical wire passes through a hole in a piece of card. A plotting compass is placed on the card. There is no current in the circuit. Which diagram shows the plotting compass when the switch is closed?

Which description of the structure of an atom is correct? A a negatively charged nucleus with negatively charged electrons around it B a negatively charged nucleus with positively charged electrons around it C a positively charged nucleus with negatively charged electrons around it D a positively charged nucleus with positively charged electrons around it

Alpha, beta and gamma emissions are compared. Alpha radiation is the ......1...... ionising as it has the ......2...... electric charge. Which words correctly complete the sentence?

A student collects data for a new radioactive substance. Using the graph, what is the approximate half-life of the substance? A $1400\text{ s}$ B $2000\text{ s}$ C $100000\text{ s}$ D $800000\text{ s}$

Four rocky planets orbit the Sun. Which list shows these planets in order of increasing distance from the Sun? A $\text{Earth}\to \text{Mars}\to \text{Mercury}\to \text{Venus}$ B $\text{Venus}\to \text{Earth}\to \text{Mars}\to \text{Mercury}$ C $\text{Mercury}\to \text{Venus}\to \text{Earth}\to \text{Mars}$ D $\text{Mars}\to \text{Mercury}\to \text{Venus}\to \text{Earth}$

In which given region of the electromagnetic spectrum does the Sun radiate the least of its energy? A infrared B microwave C ultraviolet D visible

Light from distant galaxies is redshifted when it is observed from Earth. Which property of the light increases when light is redshifted? A amplitude B frequency C speed D wavelength