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Entry Test MCQ :: Oscillations


21.  Sharpness of resonance is
A. directly proportional to damping force B. inversely proportional to damping force
C. equal to square of damping force D. equal to square of damping force

22.  Which one dows not work according to resonance?
A. T.V B. radio
C. microwave oven D. bulb

23.  The restoring force acting on simple pendulum is given by
A. mg sin ? B. mg sin ?
C. mg cos ? D. mg cos ?

24.  Phase of SHM describes
A. displacement only B. direction of motion only
C. both displacement and direction of motion D. neither displacement nor direction of motion

25.  Natural frequency of simple pendulum depends upon
A. its mass B. its length
C. square of its length D. square root of its length

26.  Electrical resonance is observed in
A. radio B. microwave oven
C. both in radio and microwave oven D. neither in radio nor in microwave oven

27.  Total distance traveled by bob of simple pendulum in one vibration is equal to
A. amplitude B. square of amplitude
C. 2 x amplitude D. 4 x amplitude

28.  When K.E energy of SHM is maximum its
A. P.E is zero B. acceleration is zero
C. restoring force is zero D. all P.E acceleration and restoring force are zero

29.  In damped harmonic oscillation which one decreases?
A. amplitude of vibration B. energy of vibration
C. both amplitude and energy D. neither amplitude nor energy

30.  Forced vibration are known as
A. simple harmonic vibration B. natural vibration
C. driven harmonic vibration D. free vibration




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