What happens to the depletion region of a p-n junction ?

The depletion region of a p-n junction contains :-

The depletion region of a p - n junction is formed

The depletion region of a p-n junction contains :-

How does the width of the depletion region of a p-n junction vary if the reverse bias applied to it decreases?

What is depletion region in p-n junction ?