A black hole is an object with gravitational field so strong that even light cannot escape from it. To what approximate radius would earth (mass 
) have to be compressed to be a black hole?
A
B
C
D
100 m
Text Solution
Verified by ExpertsThe correct answer is:
C
For earth to be blackhole, the escape speed should be at least equal to the speed of light.
= c
R = 
m
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