Physics WAEC Past Exam Questions & Answers for Nigeria SS3 2026.

1. The equation y = 0.2 sin(100πt + 2/7 πx), where y and x are in cm and t in s, represents a plane progressive wave. Determine the distance travelled by the wave in 2 complete cycles.

2. Which of the following sources of energy are inexhaustible?
I. Solar
II. Fossil fuels
III. Tidal power

3. A body which moves at constant speed in a circular path has
I. constant velocity
II. constant acceleration
III. acceleration of constant magnitude but varying direction
IV. impressed force which is directed towards the centre of the circle

4. The angle of incidence of a ray of light on a plane mirror is 55°. Determine the angle between the reflected ray and the normal.

5. Which of the following practices will lead to losses in electric power transmission?

6. Large auditoria are usually curtained heavily to prevent the occurrence of

7. A student carries a book in an outstretched hand. The force exerted on the book by the student is equal to the

8. Which of the following physical properties does not increase with increasing temperature?

9. When salt is dissolved in water, the freezing point of the water

10. The energy per unit charge transformed in a source of an electric circuit is the