The eligibility criteria for Academic qualification in AFMC are:

Candidate must have passed all the subjects opted for in the first attempt of the qualifying examinations as a regular candidate with English, Physics, Chemistry and Biology taken simultaneously and securing not less than 60% of the aggregate marks in these 3 science subjects taken together and not less than 50% marks in English and 50% marks in each of the science subjects. They must have also passed an examination in Mathematics of the 10th standard.

Now as you are not securing at least 50% marks in each of the science subjects then you aren't eligible for the course.

For AFMC official website visit the link below:

https://afmc.nic.in/Courses/MBBScourse.html

To know more about AFMC visit the link below:

https://www.careers360.com/colleges/armed-forces-medical-college-pune

I hope this answer helps. All the very best for your future endeavors!