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MHT CET Physics question

PhysicsGravitationMHT CET

The mass and radius of earth is '' and '' respectively and that of moon is '' and '' respectively. The distance between the centre of the earth and that of moon is 'D'. The minimum speed required for a body (mass 'm') to project from a point midway between their centres to escape to infinity is [MHT-CET 2023]

Answer: (C)

Solution

Potential at the midpoint is ; equating gives

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Question ID VK-060296