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Arihant General Studies question with answer

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Question #109,917
Arihant General Studies English MCQ UPPSC (Pre) 2003, 2001

Q.Assertion (A) A black hole is an astronomical entity that cannot be seen by telescope. Reason (R) The gravitational field on a black hole is so strong that it does not allow even light to escape. In the context of the above statements, which one of the following is correct?