When a body vibrates under a periodic force, the vibrations of the body are :

natural vibrations

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damped vibrations

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forced vibrations

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resonant vibrations

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Solution

The correct option is C
forced vibrations

The vibrations of a body which take place under the influence of an external periodic force acting on it, are called the forced vibrations. When the external periodic force is applied to the vibrating body, the body gradually acquires the frequency of the applied periodic force.

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Similar questions

When a body vibrates under a periodic force, the vibrations of the body are :

(a) natural vibrations (b) damped vibrations

When a body vibrates under a periodic force, the vibrations of the body are called natural vibrations.

When a body vibrates under a periodic force, the vibration of the body is called:

A wire stretched between the two fixed supports, is plucked exacly in the middle and then released. It executes (neglect the resistance of the medium) :

(a) resonant vibrations (b) natural vibrations

Q. Assertion :Resonance is a special case of forced vibration in which the natural frequency of vibration of the body is the same as the impressed frequency of external periodic force and the amplitude of forced vibration is maximum. Reason: The amplitude of forced vibrations of a body increases with an increase in the frequency of the externally impressed periodic force.

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