Hello,Riya

 if they again mail so you have to again correct they are still not satisfied that's why send ! if you will not submit again they will reject your application ..

do it before the deadline of the application form or whatever the deadline of the correction form!

hope this will help you!!

Dear Riya, there are certain instructions that you need to follow while uploading images. And if the scanned image doesn't follow the set guidelines, no matter how many times you upload, it might get rejected.Just follow these guidelines:

• The background should not be white and the image shouldn't be blurred.
• The sheet should be scanned in such a way that the area occupying the imagr is small
• Crop and resize the image between 20kb-100kb.

For more information please visit their official website: http://mbbs.aiimsexams.org/Home/UploadImages. This also mentions as how the thumb print needs to be taken.