A 'black hole' is a body in space which does not allow any radiation to come out. This property is due to its
A
very small size
B
very large size
C
very high density
D
very low density
Correct Answer: Option C
Explanation
1. A 'black hole' is a region in space where gravity is so strong that nothing, including light or any other radiation, can escape.
2. This extreme gravitational pull is a result of a massive amount of matter being compressed into an extremely small volume, leading to an incredibly high density.
3. It is this very high density, not necessarily its size (which can vary) or low density (which is incorrect), that causes the gravitational field strong enough to trap radiation.