Physics 0625/22 October/November 2022: question paper and mark scheme

Question

Which measuring devices are most suitable to determine the volume of about 200 ml of liquid and the diameter of a thin wire? volume of about diameter of a thin wire 200 ml of liquid A measuring cylinder micrometer screw gauge B measuring cylinder ruler C ruler measuring cylinder D ruler micrometer screw gauge

Question

The diagrams show speed–time graphs for four different bodies moving for 6.0 s. Which body travelled the least distance? A B 8.0 8.0 speed speed m/s m/s 6.0 6.0 4.0 4.0 2.0 2.0 0 0 0 2.0 4.0 6.0 0 2.0 4.0 6.0 time / s time / s C D 8.0 8.0 speed speed m/s m/s 6.0 6.0 4.0 4.0 2.0 2.0 0 0 0 2.0 4.0 6.0 0 2.0 4.0 6.0 time / s time / s

Question

Which statement describes the relationship between mass and weight? A Mass is the effect of a gravitational field on a weight. B Mass is the effect of a magnetic field on a weight. C Weight is the effect of a gravitational field on a mass. D Weight is the effect of a magnetic field on a mass.

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

The diagram shows a metre rule MN on two supports, P and Q. Two loads are placed on the rule, as shown. load load M N P Q The rule rests steadily on the supports. Which row is correct? total moment total moment about M about N A is clockwise is anticlockwise B is clockwise is zero C is zero is clockwise D is zero is zero

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 trolley of mass 4.0 kg travelling with a velocity of 4.0 m / s collides with a trolley of mass 2.0 kg travelling with a velocity of 2.0 m / s in the same direction. After the collision, the velocity of the 4.0 kg trolley is reduced to 3.0 m / s. 4.0 m / s 2.0 m / s 3.0 m / s v 4.0 kg 2.0 kg 4.0 kg 2.0 kg before collision after collision What is the velocity v of the 2.0 kg trolley after the collision? A 0.25 m / s B 4.0 m / s C 5.0 m / s D 16 m / s

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 boy takes 0.60 s to lift a book of mass 0.60 kg from the top of a desk and place it on a shelf. The top of the desk is 0.80 m above the floor, and the shelf is 1.7 m above the floor. The gravitational field strength is 10 N / kg. shelf top of desk 1.7 m 0.8 m Which power does the boy develop? A 0.9 W B 1.7 W C 9.0 W D 17 W

Question

A mass is lifted from rest on the ground to Y. There is no air resistance. Y P is the increase in gravitational energy of the mass. Q is the kinetic energy of the mass at Y. Which expression is equal to the mechanical work done on the mass? A P+Q B P–Q C Q–P D P×Q

Question

The diagram shows a tank containing sea water. sea water NOT TO tank 8.0 m SCALE P 60 cm The density of the sea water is 1020 kg / m3. What is the pressure at point P relative to atmospheric pressure? A 7400 Pa above atmospheric pressure B 7500 Pa above atmospheric pressure C 75 000 Pa above atmospheric pressure D 82 000 Pa above atmospheric pressure

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

Wet clothes are hanging outside to dry. What are the best conditions for the clothes to dry most quickly? wind speed temperature A high high B high low C low high D low low

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

A scientist is determining the specific latent heat of vaporisation of a liquid. He puts the liquid in a vacuum flask and heats it with a 100 W heater. The mass of liquid in the vacuum flask when it starts to boil is 300 g. He continues to heat the liquid for a further 12 minutes after which the mass of the remaining liquid is 100 g. What is the specific latent heat of vaporisation of the liquid? (Assume that all the thermal energy from the heater is used to vaporise the liquid.) A 6000 J / kg B 240 000 J / kg C 360 000 J / g D 360 000 J / kg

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 sound wave travels from air into water. Which row describes what happens to the frequency and the wavelength of the wave? frequency wavelength A decreases increases B decreases stays the same C stays the same decreases D stays the same increases

Question

The diagram shows plane water waves in a ripple tank passing through a gap between two barriers and spreading out. barrier plane water waves barrier Which name is given to this effect? A diffraction B reflection C refraction D total internal reflection

Question

A ray of light travels from air into a material, as shown. 40q air material 27q What is the refractive index of the material? A 1.4 B 1.5 C 1.7 D 1.9

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 angle between an incident ray and the surface of a plane mirror reflecting the ray is 70°. What is the angle of incidence? A 20° B 40° C 70° D 140°

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

An object is reflected in a plane mirror. Which description of the image is correct? A diminished and real B enlarged and virtual C same size and real D same size and virtual

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

Two magnets X and Y are placed end to end on a bench. The diagram shows the magnetic field pattern between the poles of the magnets. X Y Which row shows the direction of the forces exerted on X and Y by the magnetic field? force on X force on Y A B C D

Question

The diagram shows a circuit used to control the potential difference (p.d.) across a lamp. The variable resistor is adjusted until the p.d. across the lamp is 6.0 V. The current in the lamp is 0.5 A. V What is the resistance of the lamp? A 0.083 Ω B 3.0 Ω C 6.5 Ω D 12.0 Ω

Question

A charge Q flows for time t through a resistor of resistance R. Which equation gives the current I in the resistor? A I = Qt B I = Rt C I=Q D I= R t t

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 diagram shows a graph of current against voltage for a filament lamp? A B C D current current current current 0 0 0 0 0 voltage 0 voltage 0 voltage 0 voltage

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

Diagram 1 is a circuit diagram showing an a.c. power supply connected to four diodes and a resistor. Diagram 2 shows the output voltage from the power supply. diagram 1 diagram 2 voltage 0 R 0 time Which graph correctly shows the voltage–time curve across resistor R? A B voltage voltage 0 0 0 time 0 time C D voltage voltage 0 0 0 time 0 time

Question

Which diagram shows the circuit symbol for a fuse? A B C D

Question

The diagram represents an alarm system using a logic gate. temperature sensor logic siren gate smoke detector The data for the system is shown. state 0 1 temperature sensor cold hot smoke detector no smoke smoke siren no sound sound The siren sounds when there is any indication of a fire. Which logic gate is used? A B C D

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

Transformers are used in the transmission of electrical power to houses. Which type of transformer is used at the power station prior to connection to the power lines and which type is used prior to delivery to the houses? power station before houses A step-down step-down B step-down step-up C step-up step-down D step-up step-up

Question

The diagram shows an a.c. generator rotating in a clockwise direction. magnets N I S 2 1 What are the names of parts 1 and 2? 1 2 A brush slip-ring B brush split-ring commutator C slip-ring brush D slip-ring split-ring commutator

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. 230

Question

Thorium-230 is represented by the symbol 90 Th . This isotope is radioactive and decays to radium by emitting α-particles. Which nuclide is produced by this decay? 226 230 230 234 A 88 Ra B 89 Ra C 91 Ra D 92 Ra

Question

The diagram shows a piece of apparatus used to determine the nature of the emissions from a radioactive source. The absorbers can be raised out of or lowered into the path of the radiation from the source to the detector. The apparatus is evacuated. different absorbers detector radioactive source vacuum The table gives a set of results for a particular radioactive source. count rate on detector absorber in use (counts per second) none 350 thin paper 350 1.0 mm aluminium 180 1.0 cm lead 23 Which types of radiation are being emitted by the radioactive source? A α-particles and β-particles B α-particles only C β-particles and γ-rays D β-particles only

Question

The graph shows the measured count rate of radiation from a source containing a radioactive isotope. The detector is in a laboratory, with no shielding from background radiation. X count rate Y 0 0 time What is the measured count rate after a time of one half-life? X Y (X −Y ) (X +Y ) A B C D 2 2 2 2