Physics 0625/12 February/March 2023: question paper and mark scheme

Question

A measuring cylinder contains water. The diagrams show the measuring cylinder before and after some of the water is poured into a beaker. cm3 cm3 250 250 225 225 200 200 175 175 150 150 125 125 100 100 75 75 50 50 25 25 before after How much water has been poured into the beaker? A 51 cm3 B 52 cm3 C 55 cm3 D 63 cm3

Question

The diagram shows the speed–time graph for a car. speed Y X 0 0 time Which row describes the motion of the car at point X and at point Y? point X point Y A at rest moving with constant speed B moving with constant speed at rest C moving with changing speed at rest D moving with changing speed moving with constant speed

Question

A ball is dropped in a vacuum from a height of 4.0 m above the surface of Mars. The acceleration of the ball at a height of 2.0 m is 3.8 m / s2. What is the acceleration of the ball at a height of 1.0 m above the surface of Mars? A 1.9 m / s2 B 3.8 m / s2 C 5.7 m / s2 D 7.6 m / s2

Question

Two objects are placed on a balance, one on each side, as shown. Which properties of the objects can be compared using the balance? A weight, mass and volume B weight and mass only C volume and density D density only

Question

A rectangular swimming pool is 50 m long and 25 m wide. It contains water at a depth of 2 m. The density of the water is 1000 kg / m3. What is the mass of the water in the pool? A 2.5 kg B 2500 kg C 77 000 kg D 2 500 000 kg

Question

An object is rising vertically at constant speed through water. There are three vertical forces acting on it: the weight W, the drag force D, and the upward force U. Which diagram shows the magnitude and direction of the vertical forces acting on the object? A B C D U = 3.0 N U = 3.0 N U = 2.0 N D = 2.0 N U = 2.0 N D = 1.0 N W = 1.0 N D = 1.0 N D = 1.0 N W = 2.0 N W = 3.0 N W = 3.0 N

Question

Which force produces heating during contact with a moving object? A weight B friction C electrostatic force D magnetic force

Question

A metre rule is balanced at its midpoint. It remains balanced when a 3.0 N load is hung from the 40 cm mark and a second load is hung from the 80 cm mark. What is the weight of the second load? A 1.0 N B 1.5 N C 3.0 N D 9.0 N

Question

A student measures the length of a spring. She then attaches different weights to the spring. She measures the length of the spring for each weight. The table shows her results. weight / N length / mm 0 520 1.0 524 2.0 528 3.0 533 4.0 537 5.0 540 What is the extension of the spring with a weight of 3.0 N attached to it? A 4 mm B 5 mm C 12 mm D 13 mm

Question

Which power station produces the greatest atmospheric pollution for each unit of energy generated? A a gas fired power station B a hydroelectric power station C a nuclear power station D a wind farm

Question

A 500 N weight is raised through a height of 5 cm. How much work is done by the force? A 25 J B 100 J C 2500 J D 10 000 J

Question

What is the unit of power? A joule B newton C volt D watt

Question

The diagram shows a rectangular block of weight 16 N. It is resting on a flat surface. 4.0 cm 5.0 cm 9.0 cm What is the pressure at the base of the block due to its weight? A 0.089 N / cm2 B 0.36 N / cm2 C 0.80 N / cm2 D 320 N / cm2

Question

A piston traps a mass of gas inside a cylinder. Initially, the piston is halfway along the length of the cylinder. The piston is now moved towards the open end of the cylinder. The temperature of the gas remains constant. initial position cylinder piston final position How are the density and the pressure of the gas affected by moving the piston? density pressure A decreases decreases B decreases unchanged C increases decreases D increases unchanged

Question

Which statement describes what happens to air particles when the air is heated? A The particles move more slowly. B The particles move more quickly. C The particles move closer together. D The particles vibrate faster.

Question

What happens when the temperature of a liquid increases? A The mass of the liquid increases, making the liquid less dense. B The mass of the liquid increases, making the liquid more dense. C The volume of the liquid increases, making the liquid less dense. D The volume of the liquid increases, making the liquid more dense.

Question

In which states of matter can thermal energy be transferred by convection? A in gases, liquids and solids B in gases and liquids only C in gases and solids only D in liquids only

Question

A transverse wave moves along a rope. The diagram shows the position of the rope at one particular time. rope W X Y Z Which two labelled points are one wavelength apart? A W and X B W and Z C X and Z D Y and Z

Question

The diagram shows a ray of light being reflected from a plane mirror. X Y plane mirror W Z Which row identifies the angles of incidence and reflection? angle of angle of incidence reflection A W Y B W Z C X Y D X Z

Question

Blue light has a typical wavelength of 5.0 × 10–7 m and frequency of 0.60 × 1015 Hz. Which row gives a typical wavelength and frequency for red light? wavelength frequency A 2.4 × 10–7 m 0.40 × 1015 Hz B 2.4 × 10–7 m 1.3 × 1015 Hz C 6.9 × 10–7 m 0.40 × 1015 Hz D 6.9 × 10–7 m 1.3 × 1015 Hz

Question

Which diagram shows what happens when a ray of white light passes through a prism? A B spectrum white white light light spectrum C D spectrum white white light light spectrum

Question

A television (TV) station transmits a signal to a television receiving dish. The television has an on / off indicator light. The television is switched on by a remote control which changes the indicator light from red to green. Which electromagnetic wave used in these actions has the longest wavelength? satellite A receiving dish TV station B remote TV control indicator light red green C D

Question

A sound wave has a wavelength of 0.024 m. What is the frequency of this sound wave and is it audible to humans? frequency audible / Hz to humans A 140 yes B 140 no C 14 000 yes D 14 000 no

Question

The diagram shows a bar magnet at rest on a smooth horizontal surface. A length of soft-iron wire is held parallel to the magnet. N soft-iron wire magnet S The wire is released. What happens? A The wire moves away from the magnet. B The wire moves towards the magnet. C The wire’s centre stays in its present position and the wire rotates through 90° in a clockwise direction. D The wire’s centre stays in its present position and the wire rotates through 90° in an anticlockwise direction.

Question

A man walks across a carpet. He becomes negatively charged by friction with the carpet. What happens as he touches a metal object connected to the Earth? A The man gains electrons. B The man loses electrons. C The man gains protons. D The man loses protons.

Question

A laboratory has a standard wire of known resistance. It also has other wires, made from the same material as the standard wire, but of different lengths and diameters. Which wire would definitely have a resistance of less than the standard wire? wire length wire diameter A longer larger B longer smaller C shorter larger D shorter smaller

Question

The diagram shows a circuit. Which energy transfers occur? A battery → lamp → surrounding air B battery → surrounding air → battery C lamp → surrounding air → battery D surrounding air → lamp → battery

Question

X, Y and Z are lamps. + – + – + – Y Z X In which lamps is there a current? X Y Z A key B = current in lamp C = no current in lamp D

Question

The diagram shows a circuit. Which change causes the bulb in the circuit to become brighter? A a decrease in light intensity B a decrease in temperature C an increase in light intensity D an increase in temperature

Question

The current in a kettle is 10 A and the kettle is protected by a 13 A fuse. The owner of the kettle replaces the 13 A fuse with a 3 A fuse. What happens when the kettle is switched on? A The fuse melts and the kettle might be damaged. B The fuse melts and the kettle is undamaged. C The fuse does not melt and the kettle works correctly. D The fuse does not melt but the kettle fails to work.

Question

A wire is moved down in a direction perpendicular to the magnetic field. N S Three changes are suggested. 1 The speed of the movement of the wire is increased. 2 The magnetic field strength is decreased. 3 The direction of the magnetic field is reversed. Which changes increase the electromotive force (e.m.f.) induced in the wire? A 1 and 3 B 1 only C 2 and 3 D 3 only

Question

In an experiment, a wire is held above a compass needle as shown. N S An electric current is switched on in the wire and the compass needle is deflected. Which row explains why this happens and then describes what happens when the current is reversed? what happens when why this happens the current is reversed A there is a magnetic the compass needle deflects field inside the wire in the opposite direction B there is a magnetic the compass needle remains field inside the wire deflected in the same direction C there is a magnetic the compass needle deflects field around the wire in the opposite direction D there is a magnetic the compass needle remains field around the wire deflected in the same direction

Question

Over time, the strength of the magnets in an electric motor decreases. Which row describes two ways to keep the motor running at its original speed? current in number of turns the coil on the coil A decrease decrease B decrease increase C increase decrease D increase increase

Question

A rechargeable battery contains lithium. The lithium exists as positive lithium ions. How does an ion of lithium differ from an atom of lithium? A The ion has fewer electrons orbiting the nucleus. B The ion has more electrons orbiting the nucleus. C The nucleus of the ion has less charge. D The nucleus of the ion is more positively charged.

Question

An iron nuclide is represented by the symbol shown. 56 26Fe Which statements about a nucleus of this iron nuclide are correct? 1 The nucleus contains 56 neutrons. 2 The nucleon number is 30. 3 The proton number is 26. A 1 and 2 B 1 and 3 C 2 and 3 D 3 only

Question

What is an artificial source of background radiation? A X-ray machines in hospitals B radon gas from rocks C cosmic rays from the Sun D plants and other living things

Question

A sample of a radioactive isotope has an initial rate of emission of 128 counts per minute and a half-life of 4 days. How long will it take for the rate of emission to fall to 32 counts per minute? A 2 days B 4 days C 8 days D 12 days

Question

Approximately how long does it take for the Moon to make one complete orbit of the Earth? A 24 hours B 1 month C 1 season D 1 year

Question

The Sun has a mass of 2.0 × 1030 kg. Which element accounts for most of this mass? A carbon B hydrogen C oxygen D uranium

Question

The nearest star to the Sun is Proxima Centauri at a distance of 4.2 light years. Which statements are correct? 1 Telescope images of Proxima Centauri show it as it was 4.2 years ago. 2 If a spacecraft near Proxima Centauri sent a radio message to the Earth, it would take 4.2 years to arrive. 3 Proxima Centauri is outside the Milky Way galaxy. A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only