Question

A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would earth  have to be compressed to be a black hole?

A

m

B

m

C

m

D

Medium
Updated on : 2022-09-05
Solution
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Correct option is C)

For earth to be black hole the escape velocity should be at least equal to speed of light.
   escape velocity speed of light


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