A simple pendulum suspended from the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is
A. Infinite
B. T/g
C. Zero
D. g/T
Physics
When the amplitude of a wave becomes double its energy become
A. Double
B. Four times
C. One half
D. None time
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The SI unit of force constant is identical with that of
A. Force
B. Pressure
C. Surface tension
D. Loudness
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Simple harmonic motion is a type of
A. Rotational motion
B. Circular motion
C. Musical arrangement
D. Vibratory motion
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The frequency of the second pendulum is
A. 1 hertz
B. 0.5 hertz
C. 1.5 hertz
D. 2.5 hertz
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The force responsible for the vibratory motion of the simple pendulum is
A. mg cosθ
B. mg sinθ
C. mg tonθ
D. mg
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The time period of a second pendulum is
A. 4 seconds
B. 3 seconds
C. 2 seconds
D. 6 seconds
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The total energy of a body executing S.H.M is directly proportional to
A. The square root of amplitude
B. The amplitude
C. Reciprocal of amplitude
D. Square of an amplitude
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