There is no need for any specific subject to become a police officer , but 10+2 examination must be passed from any recognized board. After 12th, you can apply for recruitment in the police, which includes written examination, physical efficiency test and interview.

Here is some additional information:

Educational qualification:

To get recruited in police, you must pass 10+2 exam from any recognized board.

Subject:

You can pass 12th in any subject (Arts, Science or Commerce).

Preparation:

To perform well in Police Recruitment Exam, you should study General Knowledge, Science, Maths, Hindi and English.

Physical Efficiency:

There is also a physical efficiency test in police recruitment, so you should prepare for it too.

Interview:

There is also an interview in police recruitment, so you should be prepared for that too.

Some more subjects for career in police:

After 12th, subjects like Criminal Justice, Law and Sociology can also be good options for a career in police.

To advance to the Police Department:

If you want to advance in the police department, you may also have to obtain a graduate degree.

Important points for Police Recruitment:

Minimum height for male candidates should be 165 cms (for General & BC).

The chest of male candidates should be 81 cm without inflation and 86 cm with inflation.

The minimum weight of male candidates should be 50 kg and for female candidates 40 kg.

Good luck!!