JEE Main Physics question

Physics Gravitation JEE Main

Kepler's second law regarding the constancy of the areal velocity of a planet is a consequence of the law of conservation of [CPMT 1990, AIIMS 2002]

(A)Energy
(B)Angular momentumCorrect
(C)Linear momentum
(D)None of these

Answer: (B)

Solution

For any central force, the torque about the force centre is zero, so angular momentum is conserved; since

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Question ID VK-154735