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NTA Abhyas JEE Main2020PhysicsGravitationPractice

A planet of mass m is in an elliptical orbit about the sun m < < M sun with an orbital period T . If A be the area of orbit, then its angular momentum would be

Options

  1. A2 m A T
  2. Bm A T
  3. Cm A 2 T
  4. D2 m A T

Correct answer

A. 2 m A T

Step-by-step solution

using Kepler&#39;s II nd law ; areal velocity = constant = L 2 m &rArr; d A d t = L 2 m &rArr; L = 2 m d A d t L = 2 m A T

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