At resonance, the amplitude of forced oscillations is

Assertion : Resonance is special case of force vibration in which the nature frequency of vebration of the body is the same as the impressed frequency of external periodic force and the amplitude of force vibration is maximum Reason: The amplitude of forced vibrations of a bodyincrease with an increase in the frequency of the externally impressed perioic force

In the case of sustained force oscillations the amplitude of oscillations

Two sounds in a gas differ in their loudness level by 20 db. What is the ratio of the amplitudes of the pressure oscillations ?

In case of force oscillations of a body

A simple harmonic oscillator has a period T and energy E. the amplitude of the oscillator is doubled. Choose the correct answer.

A particle of mass 0.2 kg exectites SHM under a force of F = - 20x N. If speed of particle at mean position is 12 m/s then the amplitude of oscillations is

A certain oscillation results from the addition of coherent oscillations of the same direction y= a cos [omegat+(k-1)phi] where k is the number of oscillation [ k=1,2………N] and phi is the phase difference between k^("th") and (K-1)^("th") oscillations. The amplitude of resultant oscillation will be

State the numerical value of the frequency of oscillation of a seconds' pendulum. Does it depend on the amplitude of oscillation ?

A cage of mass M hangs from a light spring of force constant k . A body of mass m falls from height h inside the cage and stricks to its floor. The amplitude of oscillations of the cage will be-

The SHM of a particle is given by the equation x=2 sin omega t + 4 cos omega t . Its amplitude of oscillation is