Waec Physics Past Questions For Year 1992
Question 6
A barometer can be used in determining the I. height of a mountain II. depth of a mine III. dew point. Which of the following is/are correct?
- A. I, II and III
- B. II and III only
- C. I and III only
- D. I and II only
- E. III only
Question 7
A force of 20 N applied parallel to the surface of a horizontal table, is just sufficient to make a block of mass 4kg move on the table. Calculate the coefficient of friction between the block and the table. (g = 10ms2)
- A. 0.05
- B. 0.20
- C. 0.50
- D. 0.80
- E. 2.00
Question 8
Which of the following will reduce the frequency of oscillation of a simple pendulum?
- A. Increasing the mass of the bob
- B. Decreasing the mass of the bob
- C. Increasing the length of the string
- D. Decreasing the length of the string
- E. Increasing the amplitude of oscillation
Question 9
Solid weighs 0.040 N in air and 0.024 N when fully immersed in a liquid of density 800 kg m-3. What is the volume of the solid? (g = 1Oms2)
- A. 2.0 x 10-6m3
- B. 2.5x10-6m3
- C. 3.0x10-6m3
- D. 2.0x 10-5m3
- E. 3.0 x 10-5m3
Question 10
Which of the following has the same unit as the moment of a force?
- A. Force
- B. Power
- C. Work
- D. Momentum
- E. Impulse
