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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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Assertion: The centre of mass of a proton and an electron, released from their respective positions remains at rest.
Reason: The centre of mass remain at rest, if no-external force is applied.

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Correct option: A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

Option A (If both assertion and reason are true and the reason is the correct explanation of the assertion) is correct because the center of mass remains at rest when no external force is applied, which is the case for the proton and electron system.

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