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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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Assertion: There are very small sporadic changes in the period of rotation of the earth.
Reason: Shifting of large air masses in the earth's atmosphere produce a change in the moment of inertia of the earth causing its period of rotation to change.

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Correct option: A

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

Option A (If both assertion and reason are true and reason is the correct explanation of the assertion) is correct because the shifting of air masses does affect the Earth's moment of inertia, causing changes in its rotation period.

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