In this question, a statement of assertion is followed by …

Physics Gravitation Assertion & Reason MCQ (Single Correct)

In this question, a statement of assertion is followed by a statement of reason (R). Mark the correct choice as:

Assertion: A force act upon the earth revolving in a circular orbit about the sun and the work done on the earth due to this force is zero.
Reason: The necessary centripetal force for circular motion of earth, comes from the gravitational force between earth and sun.

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

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If assertion is false but reason is true.

Text Solution

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The correct answer is:

Because the earth is revolving in the circular orbit about the sun, hence the force acting on it is

the centripetal force which is always perpendicular to the direction of motion of the earth. Hence work done by the force will be zero.

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