Sir, I have completed my graduation without any arrears.But i am now confused to take a decision in my carrier.I loves IT field.

Okay if u love IT field.then do you m.tech from the same trade.because after doing m.tech you will lead to the specialization of the concern of taking the overall decision of the arrangement of the following decorum and from the colleges having so much gud scope than top class placment with quality

You should go to that areas that require both physics and IT expertise. But first you should do some IT courses, they can also be done online.