Hello Ajay,

There is no specific score you need to have in Physics and Mathematics 

in order to apply for  NDA (National Defence Academy) Exam ,you 

need to have passed 10+2 with Physics and Mathematics.

You can also visit the careers360 link regarding it-

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

Thank You.

Hope it helps.

Hii Ajay 

To join the National defence Academy there is no specific bar on percentage or score in physics. For this you just have to qualify your 12th standard depending upon your board. To appear this test you just have to qualify 10+2 from any recognised board.