Physics Past Questions 2025

Sample WAEC-style Practice Questions (Original Content)

WAEC Style

Question 1

Which of the following represents the correct dimensions of the Universal Gravitational Constant (G)?

Question 2

Which of the following is a fundamental quantity?

Question 3

A body is projected with a velocity of 40 m/s at an angle of 30 degrees to the horizontal. Calculate the time taken to reach the maximum height. (g = 10 m/s^2)

Question 4

The slope of a displacement-time graph represents:

Question 5

A car of mass 800kg moves round a circular track of radius 40m with a speed of 20 m/s. Calculate the centripetal force acting on the car.

Question 6

The weight of a body at the center of the Earth is:

Question 7

A force of 100N is applied to a box at an angle of 60 degrees to the horizontal. Calculate the horizontal component of the force.

Question 8

Which of the following will reduce friction between two surfaces?

Question 9

In simple harmonic motion, the kinetic energy of the system is maximum at the:

Question 10

A ball of mass 0.5kg moving at 4 m/s collides with a stationary ball of mass 0.5kg. If they stick together after collision, calculate their common velocity.

Question 11

The Velocity Ratio (V.R.) of a pulley system with 4 pulleys is:

Question 12

The property of a material to return to its original shape after being stretched is:

Question 13

Which of the following phenomena is used in a clinical thermometer to ensure the reading remains constant after removal from the mouth?

Question 14

The pressure at a point in a liquid at a depth of 5m is 50,000 Pa. What is the pressure at a depth of 15m in the same liquid?

Question 15

The heat required to change 100g of ice at 0 degrees Celsius to water at 0 degrees Celsius is: (Latent heat of fusion of ice = 336,000 J/kg)

Question 16

Which of the following modes of heat transfer does not require a material medium?

Question 17

Real expansivity of a liquid is the sum of apparent expansivity and the expansivity of the:

Question 18

A gas has a volume of 100 cm^3 at a pressure of 2 atm. What is its volume when the pressure is increased to 5 atm at constant temperature?

Question 19

The temperature at which the water vapor in the air is just sufficient to saturate it is the:

Question 20

The silvered surfaces of a vacuum flask (Thermos) reduce heat loss by:

Question 21

Which of the following is an example of a transverse wave?

Question 22

The number of images formed by two plane mirrors inclined at an angle of 60 degrees to each other is:

Question 23

A ray of light passes from air into a medium of refractive index 1.5. If the angle of incidence is 45 degrees, calculate the sine of the angle of refraction.

Question 24

Which of the following is true about a convex mirror?

Question 25

The speed of sound in air is 340 m/s. Calculate the wavelength of a sound wave with a frequency of 1700 Hz.

Question 26

Polarization is a property that can only be exhibited by ______ waves.

Question 27

A converging lens of focal length 15cm forms an image at a distance of 30cm from the lens. Calculate the object distance.

Question 28

The colors of the visible spectrum in increasing order of frequency are:

Question 29

A note produced by a piano has the same frequency as a note produced by a guitar, yet they sound different. This is due to difference in:

Question 30

For a person with hypermetropia, the image of a near object is formed:

Question 31

Which of the following particles is the carrier of electric current in a electrolyte?

Question 32

Calculate the effective resistance of two 4-ohm resistors connected in parallel.

Question 33

A 12V battery is connected to a 3-ohm resistor. Calculate the energy dissipated in 10 seconds.

Question 34

The purpose of the lightning conductor on a building is to:

Question 35

Which of the following devices works on the principle of electromagnetic induction?

Note: Questions 36-50 cover magnetism, electronics, and nuclear physics.

Question 36

The horizontal component of the Earth's magnetic field is zero at the:

Question 37

A galvanometer can be converted into an ammeter by connecting a:

Question 38

Which of the following is a pentavalent impurity used to dope a semiconductor?

Question 39

The process by which an alternating current is converted to a direct current is:

Question 40

In a nuclear reactor, the purpose of the control rods (boron or cadmium) is to:

Question 41

Which of the following radiations has the shortest wavelength?

Question 42

The work function of a metal is 3.0 eV. Calculate the threshold frequency. (h = 6.6 x 10^-34 Js, 1 eV = 1.6 x 10^-19 J)

Question 43

A radioactive sample has an initial activity of 800 counts/min. If its half-life is 4 hours, what is its activity after 12 hours?

Question 44

Which of the following particles is identical to the nucleus of a Helium atom?

Question 45

The energy level of an atom is given by E = -13.6 / n^2 eV. Calculate the energy of the first excited state (n=2).

Question 46

The binding energy of a nucleus is the energy required to:

Question 47

Which of the following describes the nature of light based on the De Broglie hypothesis?

Question 48

Which of the following planets is closest to the Sun?

Question 49

The time taken for a radioactive element to decay to half of its initial mass is the:

Question 50

A solar cell converts ______ energy directly into ______ energy.

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