The specific heat capacity of a substance is the heat needed to raise:

the whole body through one kelvin

West African Examinations Council

WASSCE Physics · Paper 1 — Objective

Multiple-choice. This is the paper the CBT simulator practises.

38 exam-style questions, written to the West African Examinations Council format and free to read. The answers are here too — what they do not tell you is how many you would get right with a clock running.

Sit this paper timed All WASSCE Physics papers

1. Newton third law is best stated as: action and reaction are equal and opposite, and:

WASSCE Physics · Paper 1 — Objective

1. Newton third law is best stated as: action and reaction are equal and opposite, and:

2. Heat transfer through a vacuum occurs by:

3. The emission of an alpha particle reduces the mass number of a nucleus by:

4. What is the weight of a 5 kg mass? (g = 10 m/s²)

5. A machine does 600 J of work in 20 s. Calculate its power.

6. The instrument best suited to measuring the internal diameter of a test tube is the:

7. The newton is equivalent to:

8. Current flows freely through a p-n junction diode when it is:

9. A current of 2 A flows through a 12 ohm resistor. The power dissipated is:

10. A machine has a velocity ratio of 5 and an efficiency of 80%. Its mechanical advantage is:

11. Three resistors of 3 ohms each are connected in parallel. The effective resistance is:

12. A step-up transformer has more turns in the:

13. Archimedes principle states that the upthrust on a body equals the:

14. Two 4 Ω resistors are connected in parallel. What is the effective resistance?

15. A machine raises a load of 200 N through 3 m in 6 s. Its power output is:

16. A body of mass 5 kg is raised through 4 m. The gain in potential energy is (g = 10 m/s2):

17. A body starts from rest and accelerates uniformly at 2 m/s² for 5 s. What is its final velocity?

18. Two point charges are moved twice as far apart. The force between them becomes:

19. The specific heat capacity of a substance is the heat needed to raise:

20. A car travels 120 m in 8 s. Calculate its average speed.

21. The internal resistance of a cell causes:

22. The half-life of a radioactive substance is 10 days. What fraction remains after 30 days?

23. The direction of an induced current in a conductor is found using:

24. An object placed at the centre of curvature of a concave mirror forms an image that is:

25. The pitch of a sound depends on its:

26. A car accelerates uniformly from rest to 20 m/s in 5 s. Its acceleration is:

27. A resistor of 20 Ω carries a current of 3 A. What is the potential difference across it?

28. A wave has frequency 50 Hz and wavelength 4 m. Calculate its speed.

29. A body thrown vertically upward at 20 m/s reaches a maximum height of (g = 10 m/s2):

30. Which of these is a fundamental (base) quantity?

31. Which of these is a vector quantity?

32. A wave of frequency 50 Hz travels at 340 m/s. Its wavelength is:

33. The critical angle is the angle of incidence in a denser medium for which the angle of refraction is:

34. The pressure at a depth of 5 m in water is (density 1000 kg/m3, g = 10 m/s2):

35. A body of mass 2 kg moving at 5 m/s has momentum:

36. The heat needed to change a substance from solid to liquid at constant temperature is the:

37. Which of these is a longitudinal wave?

38. A body moving in a circle at constant speed is accelerating because:

Reading these is not the same as sitting them.