11. An object at rest is said to possess
- A. potential energy
- B. kinetic energy
- C. chemical energy
- D. electrical energy
12. According to Newton’s law of cooling, the heat energy lost per unit area of a body depends on the
I. Surface area
II. Nature of the surface
III. Temperature of the surface
IV. Excess temperature over the surroundings
- A. I and II only
- B. II and IV only
- C. I,II and III
- D. I, II and IV
13.
The graph of density against temperature for water is correctly illustrated by
- A. I
- B. II
- C. III
- D. IV
14. A football is kicked at an angle of 45° to the horizontal over a defense line up with a velocity of 15\(ms^{-1}\). Calculate the magnitudeof horizontal velocity of the ball at its highest point [Neglect friction, g = 10\(ms^{-2}\)].
- A. 0.0\(ms^{-1}\)
- B. 5.6\(ms^{-1}\)
- C. 10.6\(ms^{-1}\)
- D. 15.0\(ms^{-1}\)
15. The ice point on the absolute scale of temperature is
- A. 0K
- B. 32K
- C. 100K
- D. 273K
16. Which of the following factors does not increase the rate of evaporation of water in a lake?
- A. Increase in the pressure of the atmosphere
- B. Rise in temperature
- C. Increase in the surface area of the lake
- D. Increase in the speed of the wind
17. The bob of a simple pendulum takes 8.0s to complete 10 oscillations. Determine the frequency of oscillation of the bob.
- A. 0.125Hz
- B. 1.25Hz
- C. 7.50Hz
- D. 8.00Hz
18. 
The diagram above illustrates the mercury-in-glass thermometer used for determining the temperature of a room. Use the data on it to determine the room temperature.
- A. 3.3°C
- B. 7.0°C
- C. 13°C
- D. 30.0°C
19. Frequency is measured in
- A. meter per second
- B. seconds
- C. hertz
- D. farad
20. Which of the following electromagnetic waves is most energetic?
- A. Radio waves
- B. X-ray
- C. Gamma rays
- D. Ultra-violet rays
