Hello,

To join in Air Force Academy you must have studied Mathematics and Physics in 10+2 level from a recognized board if you wish to join through NDA after class 12th or CDS after passing in graduation. But you haven't studied Physics in 10+2 level so you can join in Air Force Academy through AFCAT in the following field

LOGISTICS BRANCH

• Must have passed  three year Bachelor's degree in any discipline from a recognised university with 60% marks or equivalent or cleared section A & B examination of Associate Membership of Institution of Engineers (India) or Aeronautical Society of India from a recognised university with a minimum of 60% marks or equivalent.

ACCOUNTS BRANCH

• Must have passed three year B.Com degree from a recognised university with a minimum 60% marks or equivalent.

ADMINISTRATION BRANCH

• Must have passed  three year Bachelor's degree in any discipline from a recognised university with 60% marks or equivalent or cleared section A & B examination of Associate Membership of Institution of Engineers (India) or Aeronautical Society of India from a recognised university with a minimum of 60% marks or equivalent.

EDUCATION BRANCH

• Must have Passed 10+2 and Post-Graduation with 50% in any discipline including integrated courses offering PG (Single degree without permission to exit and lateral entry) and with 60% marks in Graduation in any discipline
• For integrated courses (single degree without permission to exit and lateral entry), the minimum duration must be as per prevailing UGC guidelines with a minimum of 50% marks in aggregate of all papers put together.

So depending on your interest in the field you have to pursue a requisite course and score required minimum percentage of marks and apply for AFCAT. The age limit is  20 to 26 Years for Graduates and Post Graduates at the time of commencement of course and the Candidates below the age of 25 years must be Unmarried.