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Assertion : If the radius of earth is de...

Assertion : If the radius of earth is decreased kepping its constant, effective value of g may increase or decrease at pole.
Reason : Value of g on the surface of earth is given by `g= (Gm)/(R^(2))`.

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explantion of Assertion.

C

If Assertion is true, but the Reason is false.

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
By changing the radius, moment of inertia will change. Hence, angular speed `omega` will change. But `omega` has no effect on the value of g on pole.
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