Learn Extracted exam questions IGCSE Physics 0625_w23_qp_21
0625_w23_qp_21
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Which is a vector quantity?
The graph shows the speed of a car travelling through a town. Which section of the graph represents a period when the car is decelerating? speed m / s time / s
An object reaches terminal velocity after being dropped and falling through air. Which graph shows how its speed varies with time? speed time
The table shows the mass and volume of three different liquids, X, Y and Z. liquid mass / g volume / cm3 X 120 200 Y Z 100 120 The liquids are placed in the same container. The liquids do not mix. Which liquid is at the top of the container and which liquid is at the bottom? liquid at top liquid at bottom
Which moving object has a resultant force acting on it?
Forces are applied to four identical objects. The length of each arrow indicates the magnitude of the force. Which object is in equilibrium?
A sphere X collides head on with a second identical sphere Y which is stationary. The mass of each sphere is 0.15 kg. Sphere X is travelling at a velocity of 2.0 m / s before the collision and produces an impulse of 0.21 N s on sphere Y. What is the velocity of sphere X after collision?
A cyclist travels down a hill from rest at point X without pedalling. The cyclist applies his brakes and the cycle stops at point Y. X Y hill Which energy transfers have taken place between X and Y?
An object of mass m falls from a higher shelf to a lower shelf. h2 h1 How much gravitational potential energy does the object lose?
A pump does 460 000 J of work to raise water to fill a tank. It takes 7 minutes to fill the tank. What is the power of the pump?
The water in a swimming pool exerts a pressure at the bottom of the pool. Which graph shows the relationship between the pressure exerted by the water and the depth of water in the pool? (Assume the density of water is constant.) pressure depth
Why can a gas be compressed easily into a smaller volume?
A gas is contained in a cylinder by a movable piston. piston cylinder gas The gas is heated so that it expands at constant pressure. How is the force of each collision of a gas particle with the piston affected and how does the frequency of collisions between the gas particles and the piston change? force frequency
On a warm day, a carton of fresh milk is covered with a wet cloth. Why does this help to reduce the temperature of the milk?
A chef heats some water in a pan on a hotplate. The temperature of the water rises by 10 C in time t. She then puts the same volume of oil in an identical pan on the same hotplate. The specific heat capacity of water is 2.5 times that of oil and water is 1.1 times denser than oil. What is the time for the temperature of the oil to rise by 10 C?
The diagram shows the view of a room heated by a radiator. The arrowed line from X to Y is the path of the convection current in the air. X Y radiator ceiling floor Which row about the air temperature and the air density at X and at Y is correct? air temperature air density
Two men, P and Q, stand close to a gap in a wall, as shown. Man P cannot see man Q but man P can hear man Q speaking. P Q gap Which statement explains this?
Which quantities relating to a wave on the surface of water can both be measured in metres?
The diagram shows part of a ray diagram that demonstrates the formation of a virtual image Y of object X by a converging lens. X Y lens ray One ray of light from X is shown approaching the lens. Which arrow shows the direction of this ray as it leaves the lens?
A ray of light is reflected by a plane mirror. P S Q R Which row shows the angle of incidence and the angle of reflection? angle of incidence angle of reflection
A thin converging lens is used to produce a real image of an object. Which statement about the real image is always correct?
A radio transmitter broadcasts at a frequency of 200 kHz. What is the wavelength of these radio waves?
The element mercury exists as a solid, a liquid or a gas. Which row gives a possible set of values of the speeds of sound through mercury? speed of sound in frozen mercury m / s speed of sound in liquid mercury m / s speed of sound in mercury vapour m / s
Which metal could be used for a permanent magnet and which metal could be used for the core of an electromagnet? permanent magnet core of electromagnet
Which statement describes the direction of an electric field at a point?
Which statement about a voltmeter is correct?
A wire has a resistance of 8.0 . A second wire of the same material has twice the length and twice the cross-sectional area. What is the resistance of the second wire?
A plastic rod is rubbed with a cloth. The rod becomes positively charged because of the movement of charged particles. Which row gives the name of these charged particles and the direction in which they move? charged particles direction of movement
An alternating (a.c.) supply is connected to a diode and a resistor in series. a.c. supply a.c. supply V t V Which graph shows how the potential difference V across the resistor varies with time t ?
The diagram shows a circuit used to switch on a heater when the temperature drops below a certain value. X Y Which row shows the components that should be connected at X and at Y? X Y
A current in a solenoid produces a uniform magnetic field inside the solenoid. The magnetic field direction is due east. Which changes will produce a stronger magnetic field with a direction due west?
A metal rod PQ rests on two horizontal metal wires that are attached to a battery. The rod lies between the poles of a magnet. P Q N S metal rod magnet magnet When the switch is closed, the rod moves to the right. What could be changed so that the rod moves to the left?
A transformer in a computer is used to transform the mains voltage of 240 V to 12 V. The number of turns on the secondary coil is 2000. Which statement about the transformer is correct?
In -particle scattering, -particles are incident on a thin metal foil. Which row describes results from the experiment and a conclusion that the results lead to? results conclusion
-particles, -particles and -rays are emitted by radioactive nuclei when they decay. Which emissions can be deflected by an electric field?
Radioisotope X decays to the stable isotope Y. The graph shows how the mass of Y present in a sample varies with time. mass of Y time M M M t1 t2 t3 Which time interval gives the half-life of X?
Which particle is absorbed by a nucleus to cause nuclear fission?
It is summer in the northern hemisphere of the Earth in June. Which statement explains why?
Which statement about the Sun is correct?
The table lists some information about some stars. Which star will eventually explode as a supernova? name of star type of star temperature / C