Can I join the Air Force after completing 12th??? What are the basic requirements to apply???

Yes you can join the Air Force Course after completing 12th, through the National Defence Academy examination which is conducted by the Union public service commission (UPSC) twice in a year.

This examination is being conducted for admission in following wings:

Indian Air Force
Indian Navy
Indian Army

The eligibility criteria are as following:
The applicant must have completed 12th standard with science.

Age limit
Age should be in between 16.5 to 19 years old.

The candidate should be unmarried and the Indian citizen……..

Physical requirements:
Better eye is 6/6 and worst eye is 6/9 with or without glass
Running: - 2.4 Km in 15 minutes
Push ups: - 13 nos
Sits ups: - 25 nos
Chin ups: - 6 nos
Rope - Climbing :- 3-4 meters.