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Assertion : Angular speed of a planet ar...

Assertion : Angular speed of a planet around the sun increases, when it is closer to the sun.
Reason : Total angular momentum of the system remains constant.

A

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

B

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

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
According to law of conservation of angular momentum, when sum of external torques acting on a system is zero, then the total angular momentum of the system remains constant.
`tau=0, L=Iomega="Constant"`
If I increase, `omega` decreases and vice versa.
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