Physics WAEC Past Questions

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151

Which of the following has the same unit as the moment of a force?

A. Force
B. Power
C. Work
D. Momentum
E. Impulse

View Answer & Discuss (8) WAEC 1992

152

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

View Answer & Discuss (2) WAEC 1992

153

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

View Answer & Discuss (5) WAEC 1992

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154

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

View Answer & Discuss WAEC 1992

155

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

View Answer & Discuss (2) WAEC 1992

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