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Standard XII

Physics

Periodic Motion

Assertion :Th...

Question

Assertion :The total energy of particle performing simple harmonic motion could be negative. Reason: Potential energy of a system could be magnetic.

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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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Total energy of the particle performing simple harmonic motion is $E = K + U = k_{max} + U_{min} . K$ is always positive, while $U$ could be $+ v e, - v e$ or zero. If $U_{min}$ is $- v e$ and its value is greater than $K_{max}$ , then $E$ would be $- v e$ .

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