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MHT CET Physics question

PhysicsGravitationMHT CET

Earth has mass '' and Radius ''. Moon has mass '' and radius ''. Distance between their centres is 'r'. A body of mass 'M' is placed on the line joining them at a distance r/3 from centre of the earth. To project the mass 'M' to escape to infinity, the minimum speed required is [MHT-CET 2022]

Answer: (C)

Solution

Potential at the point is (moon at 2r/3); gives

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Question ID VK-060340