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MHT CET Physics question

PhysicsGravitationMHT CET

If is the acceleration due to gravity at a height above the earth's surface and is the radius of the earth then, the critical velocity of a satellite revolving round the earth in a circular orbit at a height is equal to

Answer: (B)

Solution

Setting gives ; (a) has an extra factor 2 (it is

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Question ID VK-059754