Hi Priyanshu,

NDA is a national level defence entrance exam conducted for candidates who wish to pursue their career as commissioned officers in Army, Navy, Air Force, and Indian Naval course academy. The exam is conducted twice in a year - April and September by UPSC. If you have completed your 10+2/HSC and are between 16.5 to 19.5 years of age then you can apply for NDA examination. To get more details regarding NDA - Check Here

To join National Defence Academy a candidate must appear in the entrance exam conducted by Union Public Service Commission, twice a year, normally in month of March and August. Candidate must be a unmarried male. To join NDA one must pass written followed by SSB, medicals and finally to be in merit list.