Dear Sushil, 

They should refund the same amount upon completion of your course. Please note that you can choose either of the options right now- submit the original documents OR a DD of 3 Lakh. It is done to make sure that students who are allotted a seat, do not waste that seat either during the counselling or course duration. 

Please read below as the what the information brochure says in this regards: 

"Each Junior Resident will be on contract service for a period of three years.

Original certificates of any candidate who opts for a confirmed seat will be retained in the Academic Section. The same will not be returned to the candidate before completion of the course unless he/she deposits a sum of Rs.3,00,000/- (Rupees Three Lakh only) once seat has been confirmed irrespective of the fact whether he/she joins the course or not. If any candidate who joins the MD/MS/MDS & M.Ch./DM (direct 6 years) courses, leaves the said course within six months of joining, he/she shall be liable to pay a sum of Rs.3,00,000/- (Rupees Three Lakh only) and any candidate who joins the PG courses and leaves after six months of joining shall be liable to pay a sum of Rs.5,00,000/- (Rupees Five Lakh only) as compensation for losses incurred by the AIIMS due to such midstream departure. The salary for the month in which his/her resignation from the PG seat becomes effective, shall also stand forfeited."

Hope it gives some clarity. Good Luck! 

Hii suhil 

I can't exactly say about the refund issue as it would be different from college to college so i would suggest you to interact with administration department of the respective college

All the best