As you want to get the details of required qualification to become Sub Inspector so here is the information of the same for you:

I want to tell you that there are separate examination for this post is conducted by their corresponding states.

The academic qualification for this examination is that you must have at least graduation degree from a recognized college whatever may be the stream is

The age limit for this examination is 20-25 years

There are some years of age relaxations are also applicable for the SC\ST candidates.

Cheat-79-84cm
height - 168cm
Eye Sight-
6/6 or 6/9 distant vision.
J1 for near vision