Assertion : If earth were to shrink length of the day would increase.
Reason : Smaller object would take more time to complete one rotation around its axis.

Options

A. If both, Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both, Assertion and Reason are false.

Answer

D

Explanation

If earth were to shrink, length of the day would decrease. This is in accordance with the principle of conservation of angualr momentum
i.e., `I omega =` constant i.e. `(MK^(2)) ((2pi)/(T)) =` consatnt
`:. T prop K^(2)`.
Both, the assertion and reason are false.