Are you asking for JEE Main?

You should  have  a  scanned  image  of  your  photograph.The photograph should be colour or b/w (but clear contrast) with  name of the candidate and date of taking the photograph printed on it.

It should be without cap or goggles.  Spectacles   are   allowed.

Polaroid   photos   are   not   acceptable.  

Candidates with   unclear photograph are liable to be rejected.

Candidates may keep 6-8 identical photographs in reserve for use atthe time of entrance examination,Seat Allocation Processand Admission.

Good Luck!!