The angular momentum of a planet of mass M moving around the sun in an elliptical orbit is L→ . The magnitude of the areal velocity of the planet is LnM.Find the value of n.

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4Lm

L2m

2Lm

answer is B.

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Detailed Solution

Assuming SAB a triangle dA=12VdtrAreal velocity momentum L=mvr ⇒vr=Lm ⇒dAdt=L2m

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