Which of the following holds true for a black hole?

Light cannot escape its gravitational force.

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Black holes exert a large amount of gravitational force.

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It is the pre-stage of a star.

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Black hole is formed from a supernova.

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Solution

The correct options are
A Light cannot escape its gravitational force.
B Black holes exert a large amount of gravitational force.
D Black hole is formed from a supernova.
Once a massive star exhausts its fuel, it collapses within its own force of gravity and black hole is formed. They exert a very high gravitational force that even light cannot escape it. Hence, it is termed as black hole. The pre-stage of a star is called as protostar and not a black hole.

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