IGCSE Physics 0625 Paper 23, May/June 2024

A student measures the volume of a small, irregularly shaped stone. Which apparatus must be used? A a ruler and a measuring cylinder containing water B a measuring cylinder containing water only C a ruler and an empty measuring cylinder D a ruler only

Which quantity is a vector? A electric field strength B energy C mass D temperature

An athlete runs $2.4\text{ km}$ in $12\text{ minutes}$. What is the average speed of the athlete? A $0.20\text{ m/s}$ B $3.3\text{ m/s}$ C $29\text{ m/s}$ D $200\text{ m/s}$

The graph shows how the speed of a car changes during a period of $50\text{ s}$. Which row gives the car's greatest acceleration and the car's greatest deceleration?

Which statement about gravitational field strength $g$ is correct? A $g=\frac{\text{mass}}{\text{weight}}$ B $g=\text{mass}\times \text{weight}$ C $g$ is defined as the mass per unit force D $g$ is equal to the acceleration of free fall

Which property of an object cannot be changed by applying forces? A mass B shape C speed D volume

A small ball of mass $0.10\text{ kg}$ travels horizontally at a speed of $600\text{ m/s}$. It strikes a stationary wooden block of mass $1.9\text{ kg}$ resting on a frictionless horizontal surface. The ball stays in the block. What is the speed of the ball and the block immediately after the impact? A $30\text{ m/s}$ B $32\text{ m/s}$ C $60\text{ m/s}$ D $130\text{ m/s}$

An object taken underwater will be damaged if the total pressure acting on it is greater than $2.1\text{ MPa}$. What is the maximum depth that the object can be taken underwater before it breaks? atmospheric pressure $=101000\text{ Pa}$ density of water $=1000\text{ kg}\mathrm{/}{\text{m}}^3$ A $10.3\text{ m}$ B $204\text{ m}$ C $214\text{ m}$ D $225\text{ m}$

A piece of solid metal melts to become a liquid. How do the particles of metal or their behaviour change? A They increase in size. B They move around each other. C They move much further apart. D They vibrate more about their fixed positions.

Brownian motion of particles is observed. Which statements describe the movement of the particles? 1 The particles all travel along a curved path. 2 The particles move randomly. 3 The particles all travel in the same direction. A 1 and 3 B 1 only C 2 and 3 D 2 only

A fixed mass of air in a cylinder is compressed by a piston so that the volume of the air decreases at constant temperature. How do the air particles now collide with the cylinder walls? A less often with a greater velocity B less often with the same velocity C more often with a greater velocity D more often with the same velocity

The diagram shows a quantity of gas trapped in a cylinder. The piston is pushed in slowly and the gas is compressed. The temperature of the gas does not change. Which graph shows the relationship between the pressure and the volume of the gas? A A horizontal straight line B A curved line showing pressure decreasing as volume increases C A line with positive slope starting from above the origin D A straight line with negative slope

The liquid level in a thermometer rises when the thermometer is placed in hot water. What causes this? A The liquid contracts. B The liquid evaporates. C The liquid expands. D The liquid freezes.

Which statement describes what happens as ice at $0{}^{\circ }\text{C}$ melts to become water? A Energy is absorbed and the temperature remains constant. B Energy is absorbed and the temperature rises. C Energy is released and the temperature remains constant. D Energy is released and the temperature rises.

Which row explains how increasing the surface area of a fixed volume of liquid water and blowing air over the surface speeds up evaporation?

The table shows the state of materials P, Q, R and S, and whether each one contains free electrons.

Using the information in the table, which comparison of the thermal conduction in the materials is correct? A It is better in P than in Q and S. B It is better in Q than in R and P. C It is better in R than in Q and P. D It is better in S than in R and Q.

A seismic wave has a frequency of $5.0\text{ Hz}$ and a speed of $10\text{ km/s}$. What is the wavelength of the wave? A $0.20\text{ km}$ B $0.50\text{ km}$ C $2.0\text{ km}$ D $50\text{ km}$

Sound waves will diffract when going through a gap or passing the edge of a barrier. Which size of wavelength gives the most diffraction in each case?

A boy is having his eyes tested. A letter is printed on a card placed over his head. He sees the card in a plane mirror placed in front of him. He sees the letter 'R' in the mirror. How is it printed on the card? A R B Я C ᴚ D ᴚ reversed horizontally

A ray of light is refracted as it enters air from glass, as shown. What is the speed of light in the glass? A $2.0\times {10}^8\text{ m/s}$ B $2.2\times {10}^8\text{ m/s}$ C $2.3\times {10}^8\text{ m/s}$ D $2.7\times {10}^8\text{ m/s}$

A converging lens is being used as a magnifying glass. Which statement is correct? A The image is further away from the lens than the object is. B The image is inverted. C The image is real. D The object must be placed at the principal focus of the lens.

Which colours of visible light are in the correct order of increasing wavelength? A $\text{red}\to \text{yellow}\to \text{blue}$ B $\text{orange}\to \text{green}\to \text{violet}$ C $\text{indigo}\to \text{green}\to \text{red}$ D $\text{blue}\to \text{green}\to \text{violet}$

The diagram shows three types of electromagnetic radiation listed in a particular order. The electromagnetic radiation is travelling in a vacuum. $$\text{microwaves}\text{infrared}\text{X-rays}$$ Which quantities increase in magnitude going from left to right across the list? A both speed and frequency B frequency only C speed only D neither speed nor frequency

Which row gives the typical values of the speed of sound at room temperature in the materials stated?

Two small compasses are placed close to a strong bar magnet. In which directions do the compass needles point? A Top compass points up, bottom compass points right B Top compass points up, bottom compass points up C Top compass points up, bottom compass points down D Top compass points down, bottom compass points up

Students are asked for a statement about magnetic fields. Three statements are listed. 1 A magnetic field is described as a region in which a stationary electric charge experiences a force. 2 The direction of a magnetic field at a point is the direction of the force on an S pole at that point. 3 The relative strength of a magnetic field is shown by the spacing of the magnetic field lines. Which statements are correct for magnetic fields? A 1, 2 and 3 B 1 and 2 only C 2 and 3 only D 3 only

A student rubs a plastic rod with a cloth. The rod becomes electrically charged and is attracted by a negatively charged object. Which statement about the rod is correct? A It is negatively charged because it has gained electrons. B It is negatively charged because it has lost electrons. C It is positively charged because it has gained electrons. D It is positively charged because it has lost electrons.

Which circuit shows the directions of the conventional current $I$ and the flow of electrons? A $I$ downwards on left branch, electrons upwards on right branch B $I$ downwards on left branch, electrons downwards on right branch C $I$ upwards on left branch, electrons upwards on right branch D $I$ upwards on left branch, electrons downwards on right branch

A cell has an electromotive force (e.m.f.) of $1.5\text{ V}$. How much energy is transferred by the cell when it drives $6.0\text{ C}$ of charge round a complete circuit? A $4.0\text{ J}$ B $4.0\text{ W}$ C $9.0\text{ J}$ D $9.0\text{ W}$

A metal resistance wire of length $l$ and cross-sectional area $A$ has resistance $R$. What is the resistance of a metal wire of the same material that has length $2l$ and cross-sectional area $\frac{A}{2}$? A $\frac{R}{4}$ B $R$ C $2R$ D $4R$

The diagram shows two circuits. Each relay is normally open when there is no current in the coil. Which environmental conditions will cause the light-emitting diodes in circuit 1 and circuit 2 both to emit light?

A transformer is $100\mathrm{\%}$ efficient. Which pair of equations are both valid for the transformer? A $I_{\text{p}}{V}_{\text{p}}=I_{\text{s}}{V}_{\text{s}}$ and $\frac{V_{\text{p}}}{N_{\text{p}}}=\frac{V_{\text{s}}}{N_{\text{s}}}$ B $\frac{V_{\text{p}}}{I_{\text{p}}}=\frac{V_{\text{s}}}{I_{\text{s}}}$ and $N_{\text{p}}{V}_{\text{p}}=N_{\text{s}}{V}_{\text{s}}$ C $\frac{V_{\text{p}}}{I_{\text{p}}}=\frac{V_{\text{s}}}{I_{\text{s}}}$ and $\frac{V_{\text{p}}}{N_{\text{p}}}=\frac{V_{\text{s}}}{N_{\text{s}}}$ D $I_{\text{p}}{V}_{\text{p}}=I_{\text{s}}{V}_{\text{s}}$ and $N_{\text{p}}{V}_{\text{p}}=N_{\text{s}}{V}_{\text{s}}$

Which diagram shows the structure of a neutral atom? A 3 protons, 3 neutrons, 2 electrons B 2 protons, 1 neutron, 2 electrons C 2 protons, 2 neutrons, 1 electron D 1 proton, 2 neutrons, 2 electrons

What is nuclear fission? A the merging of two nuclei to create a heavier nucleus B the process by which electrons are removed from an atom C the process by which stars generate energy D the splitting of a nucleus to create two smaller nuclei

The diagram represents the paths of three types of ionising radiation, X, Y and Z, through a magnetic field. The three types of radiation are alpha, beta and gamma. Which statement about the ionising radiation is correct? A X is positively charged. B Y is negatively charged. C Z is the most strongly ionising. D X has a smaller mass than Y.

Which row correctly matches three radioactive sources to their uses?

Why are some radioactive sources stored in boxes made from lead? A Lead absorbs emissions from the radioactive sources. B Lead decreases the half-life of radioactive sources. C Lead increases the half-life of radioactive sources. D Lead repels all radioactive emissions.

The average distance from the Earth to the Sun is $1.5\times {10}^{11}\text{ m}$. What is the orbital speed of the Earth? A $4.0\times {10}^5\text{ km/day}$ B $1.3\times {10}^6\text{ km/day}$ C $2.6\times {10}^6\text{ km/day}$ D $1.9\times {10}^{14}\text{ km/day}$

In which order are the objects listed formed during the life cycle of a star? A $\text{protostar}\to \text{red giant}\to \text{supernova}\to \text{stable star}$ B $\text{protostar}\to \text{stable star}\to \text{red giant}\to \text{supernova}$ C $\text{red giant}\to \text{stable star}\to \text{protostar}\to \text{supernova}$ D $\text{red giant}\to \text{supernova}\to \text{protostar}\to \text{stable star}$

What is the distance travelled by light in one year? A $5.9\times {10}^{15}\text{ m}$ B $5.9\times {10}^{15}\text{ km}$ C $9.5\times {10}^{15}\text{ m}$ D $9.5\times {10}^{15}\text{ km}$