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JEE Main Physics question

PhysicsGravitationJEE Main

A body is released from a point at distance from the centre of earth. If is the radius of earth and , then the velocity of the body at the time of striking the earth will be **[BVP 2010]**

Answer: (D)

Solution

Energy conservation from release to impact: \dfrac{GMm}{r}\dfracmv^2\dfrac{GMm}{R}$⇒

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Question ID VK-154318