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NEET 2014 Physics question

PhysicsGravitationNEET 2014

A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would earth (mass kg) have to be compressed to be a black hole?

Answer: (3)

Solution

For light to just fail to escape, the escape velocity must equal : . \dfracExtra open brace or missing close brace{2× 6.67× 10^{-11}$× 5.98×

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Question ID VK-091485