Physics 0625/13 October/November 2019: question paper and mark scheme

Question

A student uses a ruler to find the volume of water in a tank. She measures the lengths EF and FG. I H J K water G E F What other length does she need to measure? A FJ B FK C HI D IJ

Question

An object begins to fall close to the Earth’s surface. Air resistance can be ignored. Which statement about the object’s acceleration is correct? A The acceleration is constant. B The acceleration decreases as the body falls. C The acceleration increases as the body falls. D The acceleration is zero.

Question

A car travels at an average speed of 60 km / h for 15 minutes. How far does the car travel in 15 minutes? A 4.0 km B 15 km C 240 km D 900 km

Question

Which equation shows the relationship between the weight W and the mass m of an object? m A W= g B W = mg C W=m+g g D W= m

Question

Four hollow glass spheres P, Q, R and S each have a mass of 72 g. Their volumes are given in the table. volume / cm3 P 55 Q 65 R 75 S 85 Which spheres sink in a liquid of density 0.9 g / cm3? A P, Q and R B Q, R and S C R and S only D S only

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

The diagram shows a uniform metre rule. The rule is pivoted at its mid-point. A downward force of 4.0 N acts on the rule at the 5 cm mark. The rule is held by a string at the 30 cm mark. The rule is in equilibrium. string metre rule 0 cm mark 100 cm mark 5 50 30 pivot 4.0 N What is the upward force that the string exerts on the rule? A 0.67 N B 4.0 N C 6.0 N D 9.0 N

Question

The diagrams represent the only two forces acting on an object. Which object could be moving to the right at constant speed? A B 1.0 N 1.0 N 1.0 N 1.0 N C D 1.0 N 2.0 N 2.0 N 1.0 N

Question

Brakes are used to slow down a moving car. Into which form of energy is most of the kinetic energy converted as the car slows down? A chemical B elastic C thermal D sound

Question

Three situations are listed. 1 someone blowing air into a party balloon 2 a crane lifting a block of concrete 3 a pile of books at rest on a shelf In which situations is work being done? A 1 only B 1 and 2 only C 2 and 3 only D 1, 2 and 3

Question

A boy lifts a brick from the ground and places it at rest on a higher shelf. He does 30 J of work against gravity. Which row correctly describes the final energies of the brick? gravitational potential kinetic energy gained energy gained by the brick by the brick /J /J A 0 30 B 15 15 C 30 0 D 27 3

Question

A drawing pin (thumb tack) has a sharp point at one end and a flat surface at the other end. sharp point flat surface The pin is pushed into a wooden board. How do the pressure and the force at the sharp point compare with the pressure and the force on the flat surface? force at the sharp point pressure at the sharp point A greater than on the flat surface greater than on the flat surface B greater than on the flat surface less than on the flat surface C the same as on the flat surface greater than on the flat surface D the same as on the flat surface less than on the flat surface

Question

Pressure is related to force and area. Which situation cannot be explained using this relationship? A Using a longer spanner than normal to undo a tight nut. B Hammering a nail into a piece of wood. C Tractors using wide tyres in a muddy field. D A sharp kitchen knife cutting vegetables more easily than a blunt one.

Question

Which row compares the separation and the motion of the molecules of a hot gas with those of a cool liquid? (Both the gas and the liquid are at the same pressure.) separation motion A greater for a gas faster for a gas B greater for a gas slower for a gas C smaller for a gas faster for a gas D smaller for a gas slower for a gas

Question

A fixed mass of gas is trapped in a container. The temperature of the gas is increased but the volume of the gas is kept constant. fixed mass of gas How does this change affect the kinetic energy of the molecules and the pressure on the walls of the container? kinetic energy pressure A increases increases B stays the same increases C increases decreases D decreases increases

Question

The diagram shows a liquid-in-glass thermometer. liquid thread °C –10 0 10 20 30 40 50 60 70 80 90 100 110 When the temperature of the thermometer rises, the changes produced cause the liquid thread to move to the right. Why does this happen when the temperature of the thermometer rises? A Gases contract and liquids expand. B Gases contract and solids expand. C Liquids expand more than gases. D Liquids expand more than solids.

Question

A liquid-in-glass thermometer has a range from –10 °C to 110 °C. What are the fixed point temperatures used when calibrating this thermometer in °C? A –10 °C and 0 °C B –10 °C and 110 °C C 0 °C and 100 °C D 0 °C and 110 °C

Question

The diagram shows four labelled changes of state between solid, liquid and gas. P Q solid liquid gas S R Which changes need an energy input? A P and Q B Q and R C R and S D S and P

Question

A beaker contains some cold water. A purple crystal is placed on the bottom of the beaker. The beaker is gently heated beneath the crystal. The crystal dissolves in the water. The colour spreads, as shown in the diagram. gentle heat Three students each make a statement about the experiment. Student 1 says the purple water is less dense than the rest of the water. Student 2 says the purple water is warmer than the rest of the water. Student 3 says all of the water will eventually get heated, even though water is a poor conductor of thermal energy. Which students are correct? A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

Question

Why are the outside walls of houses often painted white in very hot countries? A White surfaces are good absorbers of infrared radiation. B White surfaces are good emitters of infrared radiation. C White surfaces are poor absorbers of infrared radiation. D White surfaces are poor reflectors of infrared radiation.

Question

Which type of wave is not an example of a transverse wave? A sound wave B microwave C infrared wave D radio wave

Question

Plane water waves approach a narrow gap in a barrier. Which diagram shows the diffraction pattern that would occur? A B C D

Question

A person stands 1.0 m in front of a plane mirror. The mirror is moved away from the person at a speed of 1.0 m / s. Which statement is correct? A The image moves away from the person at a speed of 1.0 m / s. B The image moves away from the person at a speed of 2.0 m / s. C The image moves towards the person at a speed of 1.0 m / s. D The image moves towards the person at a speed of 2.0 m / s.

Question

Which diagram shows total internal reflection of light by a glass prism? A B C D

Question

The diagram shows the electromagnetic spectrum. radio γ-rays X-rays ultraviolet visible light infrared microwaves waves increasing …… A word is missing from the label below the spectrum. Which word is missing? A amplitude B frequency C speed D wavelength

Question

A man hears a starting pistol fire 1.5 seconds after he sees a puff of smoke from the pistol. The sound and the smoke are made at the same time. The starting pistol is 450 metres away from the man. What is the speed of sound calculated from this observation? A 150 m / s B 300 m / s C 330 m / s D 625 m / s

Question

The diagram represents a magnetic field. The field increases in strength from left to right. P A small compass is placed at P. Which way will the compass needle point? A B C D N N N N

Question

Two soft-iron rods are placed end-to-end inside a coil. The coil is connected to a battery. coil soft-iron rod soft-iron rod The connections from the battery to the coil are now reversed. What happens to the soft-iron rods in each case? battery connections battery connections as shown reversed A rods attract rods attract B rods attract rods repel C rods repel rods attract D rods repel rods repel

Question

A plastic rod is rubbed with a dry cloth. The rod becomes positively charged. Why has the rod become positively charged? A It has gained electrons. B It has gained neutrons. C It has lost electrons. D It has lost neutrons.

Question

A resistor is connected to a battery. There is a current in the resistor. What is the main energy change? A Chemical energy is converted into thermal energy. B Chemical energy is converted into gravitational potential energy. C Nuclear energy is converted into thermal energy. D Nuclear energy is converted into gravitational potential energy.

Question

Lamps X and Y are designed to operate at normal brightness when each are connected to a 3.0 V supply. Lamp Z is designed to operate at normal brightness when connected to a 6.0 V supply. In which circuit do all three lamps operate at normal brightness? A B C D 6V 6V 3V 6V X Y X X X Y Z Z Y Y Z Z

Question

Identical resistors are connected together to form arrangements X, Y and Z. X Y Z What is the correct order of the resistances of the arrangements from the largest to the smallest? A X→Y→Z B Y→X→Z C Z→X→Y D Z→Y→X

Question

Which circuit shows a variable resistor used to control the brightness of a lamp? A B C D

Question

Where must a fuse be connected in a mains electric circuit? A the earth wire only B the live wire only C the neutral wire only D the live wire and the earth wire

Question

A step-up transformer produces a 60 V a.c. output from a 12 V a.c. input. There are 50 turns on the secondary coil. How many turns are there on the primary coil? A 5 B 10 C 50 D 250

Question

A student uses a balance, a magnet and a power supply to determine the force on a wire in a magnetic field. The wire is held between the poles of the magnet. The student switches on the power supply. The diagrams show the readings with and without a current in the wire. power supply power supply off on wire wire N N S magnet S 108 g 107 g balance no current in wire current in wire The student reverses the current in the wire. The magnitude of the current does not change. What is the new reading on the balance? A 106 g B 107 g C 108 g D 109 g

Question

The diagram represents a neutral atom. nucleus Which row identifies each type of particle in the diagram? A electron neutron proton B electron proton neutron C neutron electron proton D proton electron neutron

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 only B 1 and 3 only C 2 and 3 only D 3 only

Question

Three types of radiation that can cause ionisation are α-, β- and γ-radiation. Which row identifies the least and the most ionising of these radiations? least most ionising ionising A α β B α γ C γ β D γ α

Question

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 emissions from the radioactive sources.