The work done by Earth’s gravitational field on moon when the moon completes half a revolution is

Zero as there is no displacement

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Zero as there is no net displacement

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Positive due to force of gravity

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Zero as there is no Force

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Zero as the force and displacement are perpendicular to each other

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Solution

The correct option is E
Zero as the force and displacement are perpendicular to each other

The gravitational force & displacement are perpendicular to each other .

W=FSCosθ = FSCos90 = FS(0) = Zero

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