Cambridge IGCSE Physics - 0625 - Supplement Paper 2 2017 Winter Zone 2

A student investigates the rate of flow of oil through a funnel.
The diagrams show the experiment and the volume of oil in the measuring cylinder at the start of the experiment, and one minute later.
What is the rate of flow of oil through the funnel during the one minute?

Four balls with different masses are dropped simultaneously from the heights shown.
Air resistance may be ignored.
Which ball hits the floor last?

The gravitational field strength on the Earth is greater than the gravitational field strength on the Moon. The Earth has an atmosphere, but the Moon does not.
Which speed-time graph represents the motion of a light ball dropped from a great height near the surface of the Earth and near the surface of the Moon?

A spring is stretched by hanging a piece of metal from it.

Which name is given to the force that stretches the spring?

A body of mass $m$ has a weight $W$ in a location where the gravitational field strength is $g$. Which statement about these quantities is correct?

An object is pivoted at point P. A student ties a length of string to a peg on the object. He pulls the string with a force $F$.



What is the moment of the force $F$ about the point P?

Each diagram shows a metal plate with four parallel forces acting on it. These are the only forces acting on the plates.
In which diagram is the plate in equilibrium?

The diagram shows an incomplete scale drawing to find the resultant of two 10N forces acting at a point in the directions shown. What is the magnitude of the resultant force?

A ball has a mass of 0.30 kg. It moves horizontally with a speed of 3.0 m/s in the direction shown.
The ball hits a wall.



The ball rebounds from the wall with a horizontal speed of 2.0 m/s.
What is the change in momentum of the ball?

An object has a mass of 500 kg.
It moves with a speed of 30 m/s.
What is its kinetic energy?

Different processes have different efficiencies.
Which row shows the most efficient process?
[Table_1]

A student runs up a flight of stairs.
Which information is not needed to calculate the rate at which the student is doing work against gravity?

The diagram shows a simple mercury barometer.

Which length is used to find the value of atmospheric pressure?

A pollen grain in a beaker of still water is viewed through a microscope.
Which diagram shows the most likely movement of the pollen grain?

The diagram shows an air-filled rubber toy. A child sits on the toy and its volume decreases. The temperature of the air in the toy does not change. How does the air pressure in the toy change and why?

The diagram shows a glass flask, sealed with a small volume of mercury in a glass tube. When the flask is gently warmed the mercury rises up the tube.
What is the main cause of the movement of the mercury?

Which row identifies the fixed points on the Celsius scale?
[Table_1]

Aluminium has a specific heat capacity of 900 J/(kg °C). The internal energy of a 2.0 kg block of aluminium increases by 13 500 J. By how much does the temperature of the block increase?

Why does a balloon filled with hot air rise?

The diagram represents plane wavefronts of a water wave about to strike a solid barrier. Which diagram shows the position of the wavefronts after reflection at the barrier?

The diagram shows an object O in front of a thin converging lens of focal length $f$.
At which point will the lens form a sharp image of the object?

The diagram shows a ray of light incident on the surface of a rectangular glass block at 90° to the surface.

Which quantities remain unchanged as the light enters the glass block?

Which piece of equipment is designed to produce a type of electromagnetic wave?

The Moon is 380,000 km from the Earth. A laser light beam is directed from the Earth to the Moon. The beam is reflected back to the Earth.
How long does it take for the light to travel to the Moon and back to the Earth?

Different waves travel through air.
Which waves have the greatest difference in speed?

The speed of sound is different in different states of matter. The speed of sound in water is 1500 m/s. Which row correctly compares the speed of sound in ice and the speed of sound in steam with the speed of sound in water?
[Table_1]

A student finds that it takes sound 0.33 seconds to travel 100 metres. From this information, what is the speed of sound?

A train of steel nails and a train of iron nails hang from a strong magnet.

The trains are then carefully removed from the magnet.
What happens to the trains?

An old and expensive steel watch becomes magnetised.
The owner wants to use the watch again. He must demagnetise the watch.
What is the best method to do this?

Which diagram represents the electric field due to a negatively-charged conducting sphere?

The diagram shows a circuit with a gap between points P and Q.
Four pieces of metal wire of the same material are connected, in turn, between points P and Q in the circuit.
The table gives the diameters and lengths of the wires.
In which wire is the current the largest?
[Table_1: diameter / mm and length / m]

The graph shows the way in which one physical quantity $y$ varies with another physical quantity $x$.

Which row gives suitable quantities for $y$ and $x$?

The potential difference across a car headlamp is 12V. The current in the lamp is 2.5A.
How much energy is transferred by the lamp in 1.0 hour?

The diagram shows a circuit with a fixed resistor connected in series with a thermistor and an ammeter.
Which row shows how temperature change affects the resistance of the thermistor and the current in the circuit?[Table_1]

An incomplete truth table for a NAND gate is shown.

What are the values of W, X, Y and Z?

The diagram shows a wire hanging freely between the poles of a magnet. There is a current in the wire in the direction shown.

The magnet and current cause a force to act on the wire.
In which direction does this force act?

A 100\% efficient transformer has 6000 turns on its primary coil and 600 turns on its secondary coil. The output voltage of the transformer is 12V. A resistor is connected across the secondary coil and dissipates 24W of power.
What is the current in the primary coil of the transformer?

In the diagram, the circle represents an atom (not to scale) with the nucleus at its centre.
A particle is emitted by a radioactive source and approaches the nucleus of the atom. The curved arrow shows the path of the particle.

What is the nature and charge of the particle?

Which row describes the behaviour of $\gamma$-rays in an electric field and in a magnetic field?
[Table_1]

A radioactive source has a half-life of 0.5 hours.
A detector near the source shows a reading of 6000 counts per second.
Background radiation can be ignored.
What is the reading on the detector 1.5 hours later?