At resonance, the amplitude of forced oscillations is

In the absence of damping the amplitude of forced oscillation at resonance will be

In the previous question, the amplitude of the oscillation is

Assertion : The amplitude of forced oscillation are constant. Reason : No external force acts on forced oscillator.

In the given table, Column I gives type of oscillation, Column II gives change in amplitude of oscillation and Column III gives examples of these types of oscillation. The combination that defines the features of forced oscillation 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