Hello Nikhil,
With All India Rank 218 in physics,you can get the following IITs if you belong to General Category:
-IIT Bhubneshwar
-IIT Gandhinagar
-IIT Hyderabad
-IIT Indore
-IIT Ropar

You might have a chance in IISc Banglore,IIT Bombay,IIT Delhi,IIT Guwhati,IIT Roorkee if you belong to SC,ST,OBC or General-PWD category.