Hello Arpan, See for NDA 2 eligibility criteria based on qulification is as follow:

For Indian Army wing of National Defence Academy: The candidates appearing for the exam must have passed or appearing class 12th from a recognized board or university.

For Air force and Indian Navy: The candidates must have passed or appearing class 12th with physics and Mathematics from a recognized board or university.

So, if you have cleared 12th then Yes you are eligible... All the best