Hello Twinkle,

The cut-off rank for AIIMS is different every year, however there is a minimum percentage that makes one eligible for admission in it.

Since you belong to the OBC category, you should have a minimum of 45%, that is, 90 marks out of 200 to become eligible.

Since you have scored 105 marks, this definitely makes you eligible for admission at AIIMS but it does not ensure that you will get a seat. This only gives you an eligible criterion. 

With these marks you might not get admission in AIIMS Delhi but you might get into other AIIMS. Do not limit your options and stay hopeful that you get into the college of your choice. 

Hope this helps.