What happens when the frequency of externally applied force becomes equal to the natural frequency of the body on which the force is applied?

The amplitude of resonance remains constant with time.

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The body starts resonating.

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The body resonates with a higher amplitude.

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All of the above.

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Solution

The correct option is D All of the above.
Resonance is a phenomenon in which an external force or a vibrating system forces another system around it to vibrate with greater amplitude at a specified frequency of operation.
These amplitude remains constant with time.

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What happens when the frequency of externally applied force becomes equal to the natural frequency of the body on which the force is applied?

The correct option is D All of the above.Resonance is a phenomenon in which an external force or a vibrating system forces another system around it to vibrate with greater amplitude at a specified frequency of operation. These amplitude remains constant with time.

The correct option is D All of the above.
Resonance is a phenomenon in which an external force or a vibrating system forces another system around it to vibrate with greater amplitude at a specified frequency of operation.
These amplitude remains constant with time.