GCE Physics 2019
Past Questions

The speed of light in vacuum is approximately $3.0 \times 10^{8} \ \text{m s}^{-1}$. Express this value in kilometres per hour (km h⁻¹).

A rocket of mass 500 kg ejects gas at a rate of 10 kg/s with an exhaust velocity of 800 m/s relative to the rocket. What is the thrust force produced by the rocket engine?

A car travelling at 30 m/s applies its brakes and decelerates uniformly at 5 m/s². What distance does the car cover before coming to rest?

A satellite orbits the Earth at a height where the gravitational acceleration is 8 m/s². If the radius of the orbit is 6.7 × 10⁶ m, what is the orbital speed of the satellite?

A body is released from rest at the top of a frictionless inclined plane of height 5 m. Taking g = 10 m/s², what is the speed of the body at the bottom of the incline?

A thermometer reads 25°C. What is the equivalent temperature on the Kelvin scale?

A ray of light travels from glass of refractive index 1.5 into air. What is the critical angle for the glass-air interface?

A converging lens of focal length 20 cm is used as a magnifying glass. If the image is formed at the near point (25 cm) from the eye, what is the magnification produced?

An electric iron rated 1000 W, 250 V is used for 2 hours daily for 30 days. If the cost of electricity is ₦50 per kWh, what is the total cost of using the iron for the 30 days?

In a semiconductor, the majority charge carriers in a p-type material are

Which of the following particles has the greatest penetrating power?

The nucleus of an atom contains 92 protons and 146 neutrons. What is the nucleon number of this atom?

a) i) What is meant by a semiconductor? ii) Distinguish between intrinsic and extrinsic semiconductors. b) i) With the aid of a labelled diagram, describe the structure of a p-n junction diode. …

a) i) State what is meant by amplification as used in electronics. ii) Define the term voltage gain of an amplifier. b) The diagram below shows a common-emitter transistor amplifier circuit. …