hey,

as per the educational qualification for NDA exam anyone who have done their 10+2 from any recognized board can apply for army wing of NDA and candidate who passed their 10+2 from recognized board and have studied mathematics and physics subjects can apply for air force and naval wings of NDA and 10+2 CADET entry scheme of indian naval army

for more information you  may visit the link mentioned below

https://competition.careers360.com/articles/nda-eligibility-criteria

all the best!