Physics - Section 1 Multiple Questions and Answers.




41.Sound travels at the fastest speed in
A. steel
B. water
C. air
D. vacuum

42.oil raise up the wick in a lamp. The principle involves
A. the diffusion of oil through the wick
B. the liquid state of oi
C. capillary action phenomenon
D. volatility of oil

43.. Superconductors are substances which
A. conduct electricity at low temperature
B. offer high resistance to the flow of current
C. offer no resistance to the flow of electricity
D. conduct electricity at high temperatures

44. Light travels at the fastest speed in
A. glass
B. water
C. Hydrogen
D. vacuum

45.Railway tracks are banked on curves
A. necessary centrifugal force may be obtained from the horizontal component weight of the train
B. to avoid frictional force between the tracks and wheels
C. necessary centripetal force may be obtained from the horizontal component of the weight of the train
D. the train may not fly off in the opposite direction

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