Physics Past Questions

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136

The figure above represents a frictionless pulley system in which a weight W is in equilibrium with a weight of 40N. Find the value of W

A. 13.3N
B. 20.0N
C. 40.0N
D. 80.0N

View Answer & Discuss (38) JAMB 1999

137

The diagram above shows a solid figure with base PQ and center of gravity G on a inclined plane. Which of the following statements is correct

A. The solid will fall over if the vertical line through G lies outside the base
B. The solid will fall over if the vertical line through lies inside the base
C. The solid will not fall over if the vertical line through G lies outside the base
D. The solid can never fall over

View Answer & Discuss (8) JAMB 1999

138

The diagram above shows a lift pump with valves at P and Q. During a downward stroke of the piston

A. both valves are open
B. P is open while Q is closed
C. P is closed while Q is open
D. Both valves are closed

View Answer & Discuss (8) JAMB 1999

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139

In the J-tube above, Y and X are on the same horizontal level and 30cm3 of air is trapped above Y when the atmospheric pressure is 75cm Hg, calculate the volume of air trapped above Y when 15cm Hg is now poured into the limb above X