Oscillations

THe ratio of maximum acceleration to the maximum velocity of a particle performing S.H.M is equal to

• amplitude

• angular velocity

• square of amplitude

• square of angular velocity

The period of a simple pendulum will be doubled if

• its length is increased to four times

• the acceleration due to gravity is doubled

• the mass of the bob is doubled

• the length of the pendulum and mass of the bob are doubled

In a damped harmonic oscillator, periodic oscillations have ----- amplitude

• gradually decreasing

• suddenly increasing

• suddenly decreasing

• gradually increasing

The phase of a particle executing simple harmonic motion is π/2 when it has:

• Maximum velocity

• Maximum energy

• Maximum displacement

• None of these

The equation of S.H.M. is y = a sin (2πnt + α), then its phase at time t is:

• 2πnt

• α

• 2πnt+α

• 2πt

A particle is moving in a circle with uniform speed. Its motion is:

• Periodic and simple harmonic

• Periodic but not simple harmonic

• Simple harmonic

• None of these

Definition of SHM is:

• Force proportional to acceleration

• mass oscillating

• acceleration proportional to displacement and in opposite direction

• none of the options given

The phase difference beetwee displacement and acceleration of a particle performing S.H.M is