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JEE Main Physics question

PhysicsGravitationJEE Main

Two satellites and revolve around a planet in coplanar circular orbits in the same sense. Their periods of revolution are 1 h and 8 h respectively. The radius of orbit of is km. When is closest to , the speed of relative to is

Answer: (A)

Solution

By Kepler's third law, km. Angular speeds: rad/h, rad/h. Linear speeds:

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Question ID VK-154511