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Question: Answered & Verified by Expert
A planet of mass m is in an elliptical orbit about the sun m<<Msun with an orbital period T. If A be the area of orbit, then its angular momentum would be
PhysicsGravitationJEE Main
Options:
  • A 2mAT
  • B mAT
     
  • C mA2T
  • D 2mAT
     
Solution:
2760 Upvotes Verified Answer
The correct answer is: 2mAT
using Kepler's IInd  law ; areal velocity = constant =L2m

dAdt = L2m

L=2mdAdt

L=2mAT

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