When the kinetic energy of a body in SHM is at its maximum, what else is true?
Correct answer D. P.E., acceleration and restoring force are all zero
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Physics MCQs
Page 16 of Physics multiple-choice questions with answers. Tap an option to check yourself.
Page 16 of 45
How far does the bob of a simple pendulum travel in one complete vibration?
Correct answer D. 4 × amplitude
In which device is electrical resonance used?
Correct answer B. Radio
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On what does the natural frequency of a simple pendulum depend?
Correct answer A. The square root of its length
How is the sharpness of resonance related to damping?
Correct answer B. It is inversely proportional to the damping force
What does the phase of S.H.M. describe?
Correct answer D. Both displacement and direction of motion
Which expression gives the restoring force on a simple pendulum?
Correct answer B. −mg sin θ
Which of these does not operate on the principle of resonance?
Correct answer C. Bulb
For what displacement does the potential energy in S.H.M. become one quarter of its maximum value, where x’ is the amplitude?
Correct answer B. x = x’/2
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The displacement in SHM is written x = x₀ sin ωt. If it is written instead as x = x₀ cos ωt, what is the phase constant?
Correct answer A. 90°
What is the product of the frequency and the time period?
Correct answer C. 1
At which position is the total energy of a body in S.H.M. greatest?
Correct answer B. All positions during SHM
A simple pendulum hung from a lift’s ceiling has period T when the lift is stationary. What is its period if the lift falls freely?
Correct answer A. Infinite
If the amplitude of a wave is doubled, what happens to the energy it carries?
Correct answer D. It becomes four times greater
The SI unit of the force constant (spring constant) is the same as that of which quantity?
Correct answer A. Surface tension
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Simple harmonic motion is a form of which motion?
Correct answer A. Vibratory motion
What is the frequency of a second’s pendulum?
Correct answer D. 0.5 Hz
Which force causes the vibratory motion of a simple pendulum?
Correct answer B. mg sinθ
If the length of a seconds pendulum is made four times greater, what happens to its time period?
Correct answer B. 2 times
What is the length of a second’s pendulum?
Correct answer C. 99.2 cm