Q.1
What is the unit of time ?
  • 1 s
  • 1 Hz
  • 1 m
  • 1 J
Q.2
What is the unit of frequency
  • 1 Hz
  • 1 s
  • 1 m
  • 1 J
Q.3
A mass attached to a spring vibrates back and forth. At the equilibrium position, the
  • acceleration reaches a maximum.
  • velocity reaches a maximum.
  • net force reaches a maximum.
  • velocity reaches zero.
Q.4
A body of massgram oscillates freely with natural frequency 1 Hz. When immersed in glycerine it undergoes critically damped motion. The damping force on the oscillator when it's speed is 0.2 cm/s is
  • 8π Newton
  • 8π duvet
  • 4π Newton
  • 4π duve
Q.5
Which of the following physical quantity is unit less?
  • Logarithmic decrement
  • Quality factor
  • Relaxation time
  • Both logarithmic decrement & Quality factor.
Q.6
What is meant by forced oscillation?
  • When an object is vibrating at its natural frequency
  • When an object continues to vibrate after the disturbance is removed
  • When an object vibrates at a frequency which is different from its natural frequency
  • When an object receives a vibration from external sources
Q.7
A wave that requires a medium through which to travel
  • longitudinal wave
  • transverse wave
  • standing wave
  • mechanical wave
Q.8
Which of the following motions are examples of oscillations?
  • Vibration of a violin string
  • Heartbeat
  • Flapping of wings of a dragonfly
  • All of above
Q.9
Which force (s) is (are) present in case of damped oscillation?
  • Restoring force
  • Damping force
  • Both restoring force and damping force.
  • Restoring force, damping force and external periodic force.
Q.10
Which one is correct, in case of oscillation?
  • Displacement and restoring force are in the same direction.
  • Displacement is always away from mean position where as restoring force is always towards the mean position.
  • Displacement is always towards the mean position where as restoring force is always away from the mean position.
  • The direction of displacement and restoring force is random.
Q.11
The general solution of undamped oscillation is ( where the symbols have their usual meaning)
  • All of above
  • x = A₁ elwot + B₁e-iwot
  • x = A sin (wot + a)
  • x = A cos(wot + a)
Q.12
_______________ deals with how much time an object oscillates, while _________________ is how often it oscillates.
  • frequency; period
  • period; frequency
  • wave; cycle
  • period; cycle
Q.13
Two simple harmonic oscillators of massgram andgram oscillate separately under the action same restoring force. The ratio of their frequencies is
  • 2:1
  • 1:2
  • 4:1
  • 1:4
Q.14
A body of mass 1 Kg, executing SHM having potential energy 0.J at the extreme position. If amplitude of oscillation iscm then it's time period is
  • 3.14 sec
  • 0.0628 sec
  • 0.1256 sec
  • 1.57 sec
Q.15
A particle executing SHM with amplitude 4 cm having total energy 6 J. The displacement of the body, such that its kinetic energy and potential energy will be 3 J each, is
  • 2 cm
  • 2.83 cm
  • 3 cm
  • 1.72 cm
Q.16
The total energy of 1-d simple harmonic oscillator is 1.2 Joule. It's potential energy, when it is midway between mean position and extreme position, is
  • 2.4 Joule
  • 1.2 Joule
  • 0.6 Joule
  • 0.3 Joule
Q.17
Which of the following is an example of free oscillation?
  • A particle oscillating in air medium.
  • An object suspended from the spring set to vibrate in vacuum.
  • The springs of dead beat galvanometer.
  • Vibrating running fork in air medium.
Q.18
Restoring force, of a body executing oscillation, vanishes at
  • mean position
  • extreme position
  • the midway between mean and extreme position.
  • It depends on the type of oscillation..
Q.19
What is the period of a simple pendulum with a length of 50.0 cm? (g = 9.m s−2)
  • 0.359 s
  • 1.42 s
  • 2.48 s
  • 2.78 s
Q.20
A pendulum with a mass of 0.kg swings with a period of 0.s and amplitude of 2.0 cm. What is the speed when the displacement of the pendulum is −1.0 cm?
  • 8 cm s−1
  • 11 cm s−1
  • 22 cm s−1
  • 36 cm s−1
0 h : 0 m : 1 s