Yes, you can apply for NDA(National Defence Academy) Exam as the eligibility
criteria for it is candidate should have passed 10+2 with Physics and maths
from a recognized Board.
You can also visit the careers360 link regarding it-
To apply for NDA exam, there is no minimum percentage required. Candidates who are between 16.5 to 19.5 years of age and have completed class 12 are eligible. To know more about NDA eligibility criteria, check the link given here - https://competition.careers360.com/articles/nda-eligibility-criteria.
Yes definitely, you can apply for NDA. There's no restriction as such.