Physics 0625/23 October/November 2022: question paper and mark scheme

Question

A wire is approximately 48 cm long and has an approximate diameter of 0.3 mm. Which measuring instruments can be used to obtain more precise values of the dimensions of the wire? length of the wire diameter of the wire A 30 cm ruler micrometer B half-metre rule 30 cm rule C half-metre rule micrometer D micrometer half-metre rule

Question

The velocity–time graph for a car is shown. 25 velocity m/s 20 15 10 5 0 0 5 10 15 20 25 30 35 time / s What is the distance travelled by the car in 35 s? A 250 m B 350 m C 450 m D 700 m

Question

Which property of a body results from the effect of a gravitational field on its mass? A the ability of the body to resist a change in motion B the density of the body C the volume of the body D the weight of the body

Question

The diagram shows four pieces of laboratory apparatus. 100 100 90 90 80 80 70 70 60 60 50 50 40 40 30 30 0.0g 20 20 10 10 balance measuring ruler stop-watch cylinder Which pieces of apparatus are used to find the density of a liquid? A balance and stop-watch B balance and measuring cylinder C measuring cylinder and ruler D stop-watch and ruler

Question

A metal rod of length 80 cm is pivoted at point O. Its centre of mass is at its mid-point. Four pulley wheels are indicated by the letter P. P P P P cords 20 cm 20 cm O metal rod 0.10 kg 0.10 kg The rod is in equilibrium, as shown. What is the weight of the rod? A 0.20 N B 1.0 N C 2.0 N D 4.0 N

Question

The diagram shows an object moving at a constant speed in a circular path in the direction shown. A force acts on the object to keep it in the circular path. In which labelled direction does this force act, when the object is in the position shown? A object B D C path of object

Question

A force F acts on a body of mass m for a time t. During this time, the velocity of the body increases from u to v. Which equation relates F, m, t, u and v ? A Fm = t(v – u) B Fm = t(v + u) C Ft = m(v – u) D Ft = m(v + u)

Question

An object falls towards the Earth’s surface. What happens to the gravitational potential energy and to the kinetic energy of the object? gravitational potential kinetic energy energy A decreases decreases B decreases increases C increases decreases D increases increases

Question

A skier is pulled up a short straight slope at constant speed by a rope. rope The tension in the rope is 100 N and there is a combined frictional and air resistance force of 20 N acting on the skier. The slope is 10 m long and the skier rises 1.5 m vertically. How much work is done by the rope pulling the skier up the slope? A 120 J B 150 J C 1000 J D 1200 J

Question

In some situations, a force does work. Which set of conditions increases the quantity of work done by the force? magnitude distance moved of force by the force A decreases decreases B decreases stays the same C increases increases D stays the same decreases

Question

A measuring cylinder of cross-sectional area 4.0 cm2 contains 224 cm3 of liquid. The pressure of the liquid at the base of the measuring cylinder due to the liquid is 8800 Pa. What is the density of the liquid? A 224 kg / m3 B 385 kg / m3 C 1600 kg / m3 D 2200 kg / m3

Question

The pressure of a fixed mass of gas in a cylinder is measured. The volume of the gas in the cylinder is slowly decreased. The temperature of the gas does not change. Which graph shows how the pressure of the gas changes during this process? A B pressure pressure 0 0 0 time 0 time C D pressure pressure 0 0 0 time 0 time

Question

Which statement about evaporation is correct? A A body in contact with an evaporating liquid loses thermal energy. B A decrease in the surface area of an evaporating liquid increases the rate of evaporation. C A wind over a liquid decreases the rate of evaporation. D It is necessary to provide an external source of thermal energy to a liquid for it to evaporate.

Question

Which change in the design of a liquid-in-glass thermometer makes it more sensitive? A a larger liquid reservoir B a longer tube C a smaller liquid reservoir D a wider tube

Question

An ice cube of mass 12 g at 0 °C absorbs thermal energy from the surroundings at a rate of 3 J / s. The specific latent heat of fusion of ice is 330 J / g. How long will it take for the ice cube to melt? A 82.5 s B 1320 s C 3960 s D 11 880 s

Question

Which piece of equipment is designed to produce a type of electromagnetic wave? A electric fire B electric generator C electric motor D electromagnet

Question

A passing boat causes a floating object on a lake to bob up and down 18 times in 12 s. The wavelength of the wave created by the boat is 48 cm. What is the velocity of these water waves? A 32 cm / s B 72 cm / s C 576 cm / s D 864 cm / s

Question

Wavefronts are incident on a boundary. What is needed for the wave to refract at the boundary? A a shiny surface at the boundary B a small gap in the boundary C different mediums either side of the boundary in which the frequency of the wave is different D different mediums either side of the boundary in which the speed of the wave is different

Question

A person uses a magnifying glass to look at a stamp. Which ray diagram shows a thin converging lens being used to do this? A B lens lens stamp stamp C D lens lens stamp stamp

Question

The diagram shows an object in front of a plane mirror. At which labelled position is the image of the object formed? B C A D plane mirror eye object

Question

The diagram shows the action of a thin converging lens on two rays of light. The rays are from the top of an object O. An inverted image I is formed. lens I O R S Which name is given to the distance RS? A principal axis B principal focus C focal length D real length

Question

The diagram shows the air molecules in part of a sound wave at a particular moment in time. X Which statement is not correct? A Earlier, there was compression at X. B Later, there will be a rarefaction at X. C This part of the wave is travelling horizontally across the page. D This part of the wave is travelling towards the top of the page.

Question

The speed of light in a vacuum is 3.0 × 108 m / s. Which value is closest to the speed of light in air? A 3.0 × 102 m / s B 3.0 × 104 m / s C 3.0 × 106 m / s D 3.0 × 108 m / s

Question

A 100 m race is started by firing a gun. The gun makes a bang and a puff of smoke at the same time. starter finishing judge 100 m When does the finishing judge see the smoke and when does he hear the bang? sees the smoke hears the bang A almost immediately almost immediately B almost immediately after about 0.3 s C after about 0.3 s almost immediately D after about 0.3 s after about 0.3 s

Question

A student is to demagnetise a bar magnet. She tries four different ways. 1 hammering the magnet 2 heating the magnet 3 passing direct current through the magnet 4 placing the magnet in water Which methods will demagnetise the magnet? A 1, 2 and 3 B 1 and 2 only C 1 and 4 D 2 and 3 only

Question

A student is investigating a resistance wire. She measures the current in a 50 cm length of resistance wire. A resistance wire The student repeats the experiment using a 100 cm length of the same resistance wire. What is the effect of this change on the current in the circuit and on the resistance of the wire? effect on effect on current resistance A decreases decreases B decreases increases C increases decreases D increases increases

Question

A resistor is connected to a cell so that there is a current from the positive terminal of the cell to the negative terminal. What causes the current in the resistor? A electrons moving from the negative terminal of the cell to the positive terminal B electrons moving from the positive terminal of the cell to the negative terminal C protons moving from the negative terminal of the cell to the positive terminal D protons moving from the positive terminal of the cell to the negative terminal

Question

A plastic rod is rubbed with a dry woollen cloth. The rod becomes positively charged. Which statement is correct? A Electrons move from the cloth to the rod. B Electrons move from the rod to the cloth. C Protons move from the cloth to the rod. D Protons move from the rod to the cloth.

Question

Which combination of the current in a resistor and the time for which it is present results in a charge of 240 C passing through the resistor? A a current of 2.0 A for 120 s B a current of 4.0 A for 960 s C a current of 6.0 A for 40 minutes D a current of 8.0 A for 30 minutes

Question

Each potential divider is placed in a circuit with a power supply. Which potential divider makes the potential difference (p.d.) across component Y increase when the light intensity increases? A B C D X X X X Y Y Y Y

Question

Two resistors, R1 and R2, are connected in series in a circuit, as shown. I0 R1 R2 The current in the resistors is I0. Another resistor, R3, is then connected in parallel with R2, as shown. R3 I1 R1 I2 R2 How do the currents I1 and I2 in the resistors R1 and R2 compare to current I0? current in R1 current in R2 A I1 = I0 I2 < I0 B I1 = I0 I2 = I0 C I1 > I0 I2 = I0 D I1 > I0 I2 < I0

Question

The diagram shows a circuit containing a cell, a lamp and two ammeters. ammeter 1 A A ammeter 2 The current reading on ammeter 2 is 0.20 A. What is the name for this type of circuit and what is the reading on ammeter 1? type of circuit reading on ammeter 1 A series 0.20 A B series greater than 0.20 A C parallel 0.20 A D parallel greater than 0.20 A

Question

The diagram shows how logic gates can be used to monitor the temperature in a refrigerator. magnetic closed = 1 R switch NOT W on door open = 0 OR temperature cold = 1 S X NOT sensor hot = 0 Y Z warning main on = 1 T AND light system switch off = 0 The warning light will come on if the output at Z is 1. The door R is open, the temperature sensor S is cold and the main system switch T is on. What is the logic state at Y and what is the state of the warning light? logic state at Y warning light A 0 off B 0 on C 1 off D 1 on

Question

Four small compasses are placed around a solenoid. solenoid A current is now switched on in the solenoid. Which diagram shows possible new directions of the compass needles? A B C D

Question

Which metal is used for the core of a transformer? A aluminium B copper C soft iron D steel

Question

The diagram shows a conducting metal rod PQ in the magnetic field between the N pole and the S pole. The rod is connected to a resistor in a circuit. In which direction should rod PQ be moved to induce the current I in the direction of the arrow in the circuit? N A Q C D B S P I

Question

A thin metal foil is placed in a vacuum. α-particles are fired at the foil and most go straight through. A very small proportion of the α-particles are deflected through large angles. What does this provide evidence for? A α-particles are very small. B There are negative electrons in each atom. C There is a tiny nucleus in each atom. D There are neutrons in each atom.

Question

The table compares α-radiation, β-radiation and γ-radiation. Which row is correct? α-radiation β-radiation γ-radiation A more ionising than β or γ a proton electromagnetic radiation B less ionising than β or γ an electron two protons and two neutrons C more ionising than β or γ an electron electromagnetic radiation D less ionising than β or γ electromagnetic radiation a proton

Question

A high-voltage power supply is connected to a metal grid and a wire, as shown. radioactive source emitting D-particles metal grid wire high voltage sparks observed When the radioactive source is placed close to the grid, sparks are observed in the position indicated. Which statement explains why the sparks are formed? A α-particles have a long range. B α-particles have no charge. C α-particles have no mass. D α-particles are strongly ionising.

Question

A student investigates four different radioactive isotopes. The student places a detector near each radioactive material. The background count rate is 36 counts per minute throughout the investigation. The table shows the detector readings at the start and after 8 hours. Which isotope has a half-life of 4 hours? count rate at the start count rate after 8 hours counts per minute counts per minute A 150 36 B 212 53 C 260 92 D 356 80