Assertion :All small oscillations are simple harmonic in nature. Reason: Oscillations of spring block system are always simple harmonic whether amplitude is small or large.

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 D Both Assertion and Reason are incorrect
All SHMs are Oscillations but the reverse is not true. Hence Assertion is incorrect.
A system is said to perform SHM only when acceleration is directly proportional to displacement and acts in opposite direction of displacement. It is not always necessary in case of spring mass system, for eg. when mass of spring or friction is considered. Hence, reason is also incorrect. Therefore, final answer is option D.

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