GCE Physics 2021
Past Questions

Which of the following is a fundamental (base) unit in the International System of Units (SI)?

A rectangular metal block measures 4.0 cm × 2.5 cm × 1.5 cm. If the mass of the block is 135 g, what is the density of the metal?

A body of mass 2 kg is suspended by two strings making angles of 30° and 60° with the vertical respectively. If the system is in equilibrium, what is the tension in the string making 30° with the vert…

A stone of mass 2 kg is thrown vertically upward with an initial kinetic energy of 180 J. Taking g = 10 m/s², what is the maximum height reached by the stone?

A piece of copper of mass 200 g is heated from 30°C to 80°C. If the specific heat capacity of copper is 400 J kg⁻¹ K⁻¹, calculate the quantity of heat absorbed by the copper.

A vibrating tuning fork of frequency 512 Hz is held over a closed resonance tube. If the speed of sound in air is 340 m/s, what is the shortest length of air column that will resonate? (Neglect end co…

An observer standing beside a road hears the horn of an approaching vehicle at a frequency higher than the actual frequency of the horn. When the vehicle passes and moves away, the frequency heard dro…

In a stationary wave pattern set up in a string of length 1.2 m, three antinodes are observed. If the frequency of vibration is 150 Hz, what is the speed of the wave in the string?

Which of the following pairs of colours are the primary colours of light?

An object 4 cm tall is placed 15 cm from a diverging lens of focal length 30 cm. What is the height of the image formed?

A glass prism deviates a ray of red light less than a ray of violet light. This observation is best explained by the fact that

Three capacitors of capacitances 2 μF, 3 μF and 6 μF are connected in series across a 12 V supply. What is the charge stored on the 6 μF capacitor?

An alternating voltage is represented by $V = 120\sin(100\pi t)$ volts. What is the root mean square (r.m.s.) value of this voltage, correct to one decimal place?

Which of the following statements correctly describes isotopes?

In a nuclear reaction, the mass defect of a nucleus is $5.0 \times 10^{-29}$ kg. The binding energy of the nucleus is approximately [Speed of light $c = 3.0 \times 10^{8}$ m/s]

a) State Newton's three laws of motion. (3 marks) b) A car of mass 1200 kg is moving along a straight horizontal road at a velocity of 30 m/s. The driver applies the brakes and the car decelerates un…

a) i) State the principle on which the phenomenon of resonance in sound is based. (2 marks) ii) Describe a simple experiment to demonstrate resonance in sound using a set of identical tuning forks.…

a) State Faraday's law of electromagnetic induction and Lenz's law. (4 marks) b) A rectangular coil of 200 turns, each of area 0.05 m², is placed in a uniform magnetic field of flux density 0.8 T. Th…

( a ) ( i ) Distinguish between nuclear fission and nuclear fusion. ( ii ) State ONE condition necessary for nuclear fusion to occur. ( b ) Consider the following nuclear reaction: ²³⁵₉₂U + ¹₀n → ¹⁴¹₅…