Question
12. 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
(mass 5.98 x 1024 kg) have to be compresed to
be a black hole?
[AIPMT-2014]
(1) 10-9 m
(2) 10-6 m
(3) 10-2 m
(4) 100 m