NDA

Hello,
NDA stand for National Defence Service Exam. This exam is conduct twice time in a year. This exam is conducted by UPSC. NDA Examination is conducted in 3 wings- Indian Air Force, Indian Navy and Indian Army.
If you have completed 12th standard from recognized board, then you are eligible for NDA exam. But, your age should be in between 16.5 to 19 years. Only unmarried male candidate are eligible for NDA exam. You must have citizenship of India. The eye sight criteria for NDA exam is given below-
Eye Standards for Indian Navy and Indian Army:-
Uncorrected Without Glass :- 6/9
Corrected with glass: - 6/6
Limits of Myopia: - -0.75
Limits of Hypermetropia :- +1.5
Binocular Vision :- III
Limits of Color Perception :- I
Eye Standards for Indian Air force Exam :-
Minimum Distant vision 6/6 in one eye and 6/9 in other
correctable to 6/6 only for Hypermetropia. Colour vision CP-1
Hypermetropia: +2.0 D Sph Manifest Myopia: Nil
Retinoscopic Myopia: -0.5 in any Meridian permitted
Astigmatism: +0.75 D Cyl (within +2.0 D-Max)
Most of the time they reject candidates with eye-sight problem. You must checked the criteria of eye-sight. If you have matched it then you can definitely eligible for NDA exam. Color blind candidate are strongly not eligible for NDA exam
Hope it helps.

Hello Zaid,
If you are from CBSE board then well and good, otherwise you must prepare for maths at the level of NCERT. Practice maths thoroughly. Maths portion is of 11th and 12th. In addition, physics and chemistry are from 11th and 12th. Be thorough with the biology of 10th standard. For history and geography, refer books from 8th to 10th. Be good in English. Buy Arihant pathfinder. It is a good book for NDA.
The minimum acceptable height is 157 cms (162.5 cms for Air Force). Under NDA Physical Requirements, the minimum acceptable height is 157.5 cms for Army and 162.5 cms for Air Force. There are a few exceptions set according to the region of the candidate.