Physics 1991 JAMB Past Questions

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How long does it take a 750W heater to raise the temperature of 1kg of water from 20^oC to 50^oC [specific heat capacity of water = 4200Jkg^-1K^-1]

A. 84s
B. 112s
C. 168s
D. 280s

View Answer & Discuss JAMB 1991

The saturated vapour pressure of a liquid increases as the

A. volume of the liquid increases
B. volume of the liquid decreases
C. temperature of the liquid increases
D. temperature of the liquid decreases

View Answer & Discuss (1) JAMB 1991

The absolute temperature of a perfect gas is proportional to the average

A. potential energy of the molecules
B. seperation between the molecules
C. kinetic energy of the molecules
D. velocity of the molecules

View Answer & Discuss (1) JAMB 1991

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A room is heated by means of a charcoal fire, An occupant of the room standing away from the fire is warmed mainly by

A. convection
B. radiation
C. conduction
D. reflection

View Answer & Discuss (5) JAMB 1991

A boy timed 30 oscillations of a certain pendulum thrice and obtained 1min. 10s, 1min. 12s and 1min. 7s respectively.The mean period of oscillation of the pendulum is

A. 0.14s
B. 0.43s
C. 2.32s
D. 6.97s

View Answer & Discuss (14) JAMB 1991

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Physics 1991 JAMB Past Questions

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