- A black hole is not a regular star; it is the result of the gravitational collapse of a very massive star after it exhausts its nuclear fuel. - This collapse compresses the mass into an extremely small volume, resulting in incredibly dense matter. - The gravitational pull becomes so strong that nothing, not even light, can escape from within a certain boundary called the event horizon. - The "surface" (event horizon) of a black hole is characterized by an extremely large acceleration due to gravity (often conceptualized by the escape velocity exceeding the speed of light). - Options A, B, and D are incorrect because a black hole is not a typical star, and it has extremely large, not zero or moderate, acceleration due to gravity at its boundary.
'Black hole' is a
Asked in UPSC NDA 1 2019 · Topic: Space (Black Holes, Neutron Stars, and White Dwarfs (Physics of Compact Objects))
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Answer: C. star which has collapsed into itself and has large acceleration due to gravity on its surface
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