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If the angular momentum of a planet of mass m, moving around the Sun in a circular orbit is L, about the center of the Sun, its areal velocity is :

(1) $4L\over m$

(2) $L\over m$

(3) $L\over2m$

(4) $2L\over m$
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Ans : (3) $L\over2m$

Explanation:

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Ans: (3) $L\over2m$

Sol: ${dA\over dt} ={L\over2m}$

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