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JEE Main Physics question

PhysicsGravitationJEE Main

Gravitational acceleration on the surface of a planet is , where is the gravitational acceleration on the surface of the earth. The average mass density of the planet is times that of the earth. If the escape speed on the surface of the earth is taken to be , the escape speed on the surface of the planet in will be

Answer: (C)

Solution

Since , , so . Using :

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Question ID VK-154296