- Black holes have extremely strong gravity. - This gravity is due to a large mass compressed into a very small volume. - Mass in a small volume results in very high density. - The escape velocity at the event horizon exceeds the speed of light due to the extreme gravity. - Therefore, nothing, including radiation, can escape.
A ‘black hole’ is a body in space which does not allow any radiation to come out. This property is due to its
Asked in UPPCS Prelims 2000 · Topic: Space (Black Holes, Neutron Stars, and White Dwarfs (Physics of Compact Objects))
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