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Question : a black hole is a body from whose surface nothing may ever escape. What is the condition for a uniform spherica mass M to be a black hole? What should be the radius of such a black hole if it's mass is the same as that of the earth?? (5 marks)

Answer 1

The main condition of turning into a black hole
is that it should reach its highest limit of entropy, If you are able to squeeze the entire earth in the size of a football, the earth will collapse in its own gravity and thus creating a black hole.

Its not clear that the black holes exist, we haven't detected it. But, we are going as the theory of relativity states


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