Hey Nikhil.

No, there is no separate entrance examination for admission in AFMC. Admission is taken on the basis of your NEET score only. You have to fill an application form for AFMC separately. You will be shortlisted on the basis of your NEET marks and then you'll have to take theToELR (Test of English Language & Comprehension and Logical Reasoning), Psychological Assessment Test (PAT), followed by Personal Interview. 

The NEET cut off in 2018 was 550 marks for both boys and girls. In 2017 it was 570 marks for boys and 600 for girls.

Best of luck!