Assertion :Vibrational kinetic energy is insignificant at low temperatures. Reason: Interatomic forces are resposible for vibrational kinetic enrgy.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Vibrational kinetic energy is insignificant at low temperature because at lower temperatures particles have less energy and hence less vibration from equilibrium position occurs.

Interatomic forces are responsible for vibrational kinetic energy since this energy arises from small disturbance of forces on particles from balanced interatomic forces.

Hence both assertion and reason are correct but reason in not correct explanation for assertion.

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