what are black holes?

what are black holes?..

Answer / swetcha

A black hole is a concentration of mass great enough that
the force of gravity prevents anything from escaping it
except through quantum tunnelling behaviour (known as
Hawking Radiation). The gravitational field is so strong
that the escape velocity near it exceeds the speed of
light. This implies that nothing, not even light, can
escape its gravity, hence the word "black". The term "black
hole" is widespread, even though it does not refer to a
hole in the usual sense, but rather a region of space from
which nothing can return.

Is This Answer Correct ?    4 Yes 0 No

Post New Answer

More Physics Interview Questions

what is floation?

1 Answers  

what is the difference between delta G and delta G powers zero?

2 Answers  

what is coma?

1 Answers  

what is the difference between covalent solid and ionic solid?

3 Answers  

what is a geostationary satellite?what are its applications?

2 Answers   Geo Research Centre,

Are protons unstable?

1 Answers  

How to calculate an orbit at a given altitude?

0 Answers  

How did the Universe begin?

1 Answers  

what is doppler effect?

1 Answers   Matrix,

Do all objects in the universe exert force on all other objects?

2 Answers  

What is Hawking Radiation?

1 Answers  

How to caluculate moment of inertia of a hollow cylinder about its axis?

1 Answers   Geo Research Centre,