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MHT CET 2022 Physics question

PhysicsGravitationMHT CET 2022

A body is projected vertically, upwards from earth's surface with velocity '2' where '' is the escape velocity from earth's surface. The velocity when body escapes the gravitational pull is

Answer: (A)

Solution

Use energy conservation. At the surface the total energy is . Far away (where gravity is negligible) the energy is . With , i.e. $ =

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Question ID VK-097072