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Physics Past Questions and Answers

Jamb Physics Questions

Question 1591:

The ground is always cold at night because the

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A Atmosphere absorbs the sun's energy at night
B Earth radiates heat to the atmosphere at night
C Sun no longer shine at night
D Atmosphere reflects the sun's energy at night

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Question 1592:

A cannon is fired from town X,after how long is the sound heard at a town Y 4.95 km away?
[velocity of sound in the air = 330 ms^-1]

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A 30 s
B 10 s
C 10 s
D 15 s

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Question 1593:

The phenomenon that shows that increase in pressure lowers the melting point can be observed in

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A Sublimation
B Condensation
C Coagulation
D Regelation

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Question 1594:

A block of aluminum is heated electrically by a 30 w heater if the temperature rises by 10°c in 5 minutes, the heat capacity of the aluminum is

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A 900 JK<sup style='font-size: smaller;'>-1</sup>
B 90 JK<sup style='font-size: smaller;'>-1</sup>
C 100 JK<sup style='font-size: smaller;'>-1</sup>
D 200 JK<sup style='font-size: smaller;'>-1</sup>

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Question 1595:

Steam burn is more severe than that of boiling water because

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A Steam burn is independent of relative humidity
B Stem possesses greater heat energy per unit mass
C Water boils at a higher temperature
D Steam burn is dependent on relative humidity

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