O Level Physics 5054 Paper 11, Oct/Nov 2023

Which description is of a scalar quantity? A It has a direction only. B It has direction and unit only. C It has direction, magnitude and unit. D It has magnitude and unit only.

The diagram shows a distance–time graph for a car travelling in a straight line. In which region is the car decelerating?

A wooden block is pushed across a table at constant speed. Which statement is correct? A The frictional force increases as the block moves at constant speed. B The frictional force is equal and opposite to the pushing force. C The frictional force is greater than the pushing force. D The frictional force is less than the pushing force.

A car begins to move. It speeds up until it reaches a constant speed. What happens to the acceleration and what happens to the velocity of the car? A Both the acceleration and the velocity change. B Only the acceleration changes. C Only the velocity changes. D Neither the acceleration nor the velocity changes.

The diagram shows how the length of a spring changes when a load of $10\text{ N}$ is suspended from it. The $10\text{ N}$ load is replaced by a $20\text{ N}$ load. What is the new length of the spring? A $6.0\text{ cm}$ B $11\text{ cm}$ C $14\text{ cm}$ D $16\text{ cm}$

A force $F$ causes a moment about point $\text{O}$ on an L-shaped bar. The force $F$ acts at point $\text{P}$. What is the moment of $F$ about $\text{O}$? A $F{d}_1$ B $F{d}_2$ C $F{d}_3$ D $F{d}_4$

A uniform metre rule of weight $W$ is pivoted at the $25\text{ cm}$ mark and held horizontal by a force $F$ applied upwards at the $100\text{ cm}$ mark. The rule is supported by a vertical force $P$ acting at the pivot. What is the magnitude of $P$? A $\frac{1}{3}W$ B $\frac{1}{2}W$ C $\frac{2}{3}W$ D $\frac{4}{3}W$

The diagram shows a stationary fairground ride with four chairs of equal mass. Which chair has the most gravitational potential energy?

Hydroelectric and tidal power stations generate electrical energy. Do these use renewable sources of energy?

Which energy resource is correctly described?

A small motor has an input power rating of $10\text{ W}$ and is switched on for $5.0\text{ minutes}$. What is the electrical energy input to the motor in this time? A $2.0\text{ J}$ B $50\text{ J}$ C $300\text{ J}$ D $3000\text{ J}$

Two liquids, $\text{X}$ and $\text{Y}$, are poured into beakers of different sizes. Liquid $\text{X}$ has a density of $1000{\text{ kg/m}}^3$ and liquid $\text{Y}$ has a density of $900{\text{ kg/m}}^3$. On the base of which beaker is the pressure greatest?

A swimmer is at the bottom of a pool. The density of the water in the pool is $1000{\text{ kg/m}}^3$ and the gravitational field strength is $9.8\text{ N/kg}$. Which expression gives the pressure exerted on the swimmer due to the water? A $\frac{5.0\times 1000}{9.8}\text{ Pa}$ B $5.0\times 1000\times 9.8\text{ Pa}$ C $\frac{1000}{5.0}\text{ Pa}$ D $\frac{1000\times 9.8}{5.0}\text{ Pa}$

Some gas is trapped in a large syringe. The atmospheric pressure is $100\text{ kPa}$. The gas pressure is $200\text{ kPa}$ above atmospheric pressure. The piston moves outwards and the volume of the trapped gas doubles. The temperature remains constant. What is the new gas pressure? A $100\text{ kPa}$ B $150\text{ kPa}$ C $200\text{ kPa}$ D $400\text{ kPa}$

A graph of temperature against time is shown for a material being heated from its solid state. Which row describes what is happening at $\text{X}$, $\text{Y}$ and $\text{Z}$?

A student on a camping expedition cools a sealed bottle of water which is at the same temperature as the surrounding air. Which method cools the water at the greatest rate? A Wrap the bottle in aluminium foil and place it in a shady place. B Wrap the bottle in dry, white paper and put it in a sunny place. C Wrap the bottle in foam and put it in a breeze. D Wrap the bottle in wet paper and put it in a breeze.

A student suggests three factors that affect the rate of emission of thermal energy by radiation from a hot object. These are: 1 the surface temperature of the object 2 the surface area of the object 3 the surface colour of the object. Which suggestions are correct? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

A plane mirror on a vertical wall forms an image of an object placed in front of it. Which characteristics describe the image? A real and inverted B real and upright C virtual and inverted D virtual and upright

The diagrams show light travelling in air incident on the surface of a glass block. Some light is reflected and some light is refracted. Which diagram shows the reflection and refraction of the light?

Which statement is correct? A Total internal reflection only occurs when light travels from air into glass. B The larger the refractive index of glass, the larger is the critical angle. C When total internal reflection occurs, the angle of incidence is equal to the angle of reflection. D When total internal reflection occurs, the angle of incidence is less than the critical angle.

An object is placed in front of a converging lens of focal length $4.0\text{ cm}$. The height of the image is $6.0\text{ cm}$. The arrangement is shown on the scale diagram. What is the linear magnification produced by the lens? A $0.50$ B $1.5$ C $2.0$ D $6.0$

Which range of sound frequencies includes only frequencies of sound that can be heard by a healthy human ear? A $0.5\text{–}50\text{ Hz}$ B $5\text{–}500\text{ Hz}$ C $50\text{–}5000\text{ Hz}$ D $500\text{–}50000\text{ Hz}$

An aircraft flying through the air becomes electrically charged. What causes this to happen? A background radiation in the aircraft B friction of the aircraft with the air C heating of the aircraft surface D radio waves emitted by the aircraft

Two metal spheres are brought close to each other. The two spheres repel each other. Which statement explains this? A Both spheres are charged and both are positive. B Both spheres are charged but one is positive and the other is negative. C The spheres have the same number of electrons. D The spheres have the same number of protons.

A student sets up the circuit shown. The lamp does not light. What makes the lamp light? A changing the supply to a $12\text{V}$ battery B inserting a fuse C reversing the battery connections D reversing the connections to the lamp

Circuits P and Q each contain two identical resistors, each of resistance $R$. What is the resistance of circuit P and what is the resistance of circuit Q?

The current in an electric motor is $2.0\text{ A}$. It transfers $20\text{ J}$ of energy in $5.0\text{ s}$. What is the potential difference (p.d.) across the motor? A $0.50\text{ V}$ B $2.0\text{ V}$ C $8.0\text{ V}$ D $50\text{ V}$

Three students make comments about appliances with double insulation. student P: Appliances with double insulation do not need an earth wire. student Q: Double insulation protects the user of the appliance from an electric shock. student R: The circuits of appliances with double insulation do not contain fuses. Which students are correct? A P, Q and R B P and Q only C P and R only D Q and R only

A magnet moves at constant speed through a coil of wire. The coil is connected to an oscilloscope. The diagram shows the trace produced on the screen. The experiment is changed and a new trace is produced. Which statement explains why the new trace is different from the original trace? A The coil is longer and the other pole of the magnet enters the coil first. B The coil is longer and the same pole of the magnet enters the coil first. C The coil is shorter and the other pole of the magnet enters the coil first. D The coil is shorter and the same pole of the magnet enters the coil first.

A bar magnet is dropped through a vertical solenoid that is connected to a sensitive ammeter. A current is induced in the solenoid and the solenoid becomes an electromagnet. Which row describes the polarity of end Y of the solenoid and the force between the solenoid and the bar magnet when the bar magnet leaves the solenoid?

Which graph shows the voltage output against time for a simple a.c. generator?

A charger for a mobile phone (cellphone) uses a transformer which steps the voltage down from $230\text{ V}$ to $5.0\text{ V}$. The primary coil in the transformer has $2500\text{ turns}$. How many turns are on the secondary coil? A $11$ B $54$ C $500$ D $11500$

A commutator is connected to the coil of a d.c. motor. The commutator rotates and connects the coil to the power supply. Once every half-turn, the current in the coil reverses. What is the name of the commutator and what is the orientation of the plane of the coil as the current reverses?

A girl makes a simple transformer to illuminate a low voltage lamp. The transformer is shown. What is the material of the rod and what is the type of power supply?

Which particles are in the nucleus of a large atom? A neutrons and electrons only B protons and electrons only C protons and neutrons only D protons, neutrons and electrons

Alpha ($\alpha$) particles and beta ($\beta$) particles are emitted during radioactive decay. Which particle has the weaker ionising effect and which has the weaker penetrating power?

A beam of beta ($\beta$) particles passes into a magnetic field and into an electric field. Which numbers show the paths of the beam through the fields? A 1 and 4 B 1 and 6 C 2 and 5 D 3 and 6

The isotope radon-222 has a half-life of $3.8\text{ days}$. Which statement about a sample containing $1.0\text{ mg}$ of radon-222 is correct? A After $1.9\text{ days}$ there is $0.50\text{ mg}$ of radon-222 left. B After $3.8\text{ days}$ there is $0.50\text{ mg}$ of radon-222 left. C Its half-life is half that of a $2.0\text{ mg}$ sample. D There is no radon-222 left after $7.6\text{ days}$.

What is the first stage in the life cycle of stars? A a black hole B a cloud of gas and dust C a red supergiant D a supernova

What is the definition of redshift? A the increase in observed frequency of light from galaxies that are moving away from the Earth B the increase in observed wavelength of light from galaxies that are moving away from the Earth C the light emitted by distant galaxies that is blue when it reaches the Earth D the light reaching the Earth that is red when it is emitted by distant galaxies