For written you just have to rely on 11th and 12th cbse syllabus, ncert books solely and a bit of current affairs at that time . You should have the detailed syllabus for NDA exam, and you can match it with cbse 10+2 syllabus. For ssb you should contact any ssb preparation centre after clearing written exam.

For further information , you can check out this link as given below:

https://competition.careers360.com/articles/how-to-prepare-for-nda

Hope you understand .

Thank you .

Hello,

Yes, you can still apply for National Defence Academy Entrance Examination if you have passed 10+2 in Arts stream from a recognized board. But you can select Indian Military Academy only in NDA application. Candidates who have passed 10+2 with Mathematics, Physics and Chemistry will be eligible to apply for Indian Naval Academy, Air Force Academy and Indian Military Academy whereas the candidates who have passed 10+2 with any other subjects are eligible to apply for Indian Military Academy. Candidates who are appearing in 10+2 examination are also eligible to apply for NDA provisionally. Such candidates must obtain the passing certificate before the cut off date specified. The age of the candidate must be 16.5 to 19.5 years.