want to become Police officer(IPS)

To become a class 1 police officer in India, you need to clear the IPS (Indian Police Services) exam which is held by Union public service commission (UPSC) every year. It is a very competitive exam with more than 3,50,000 candidates taking the exam out of which under 200 are finally selected. So be prepared to work hard if you want to get selected.
Educational and age requirement
The candidate should be a citizen of India/ Nepal/ Bhutan and a graduate in any disciple to apply. He should be between the age of 21 – 30 years but the age is relaxed by 5 years for certain category (SC/ST) candidates.
Physical requirement
Height – Male 165 cm & ST (not the SC/ OBC) – 160 cm
Female 150 cm & ST (not SC/ OBC)- 145 cm
Chest – Male Minimum 84 cm. Expansion 5 cm.
Female Min 79 cm expansion 5 cm.
Eye sight – 6/6 or 6/9 distant vision for good eye.
6/12 or 6/9 for worst eye. Near vision J 1 for good eye. J2 for worst eye.

Knowing the right people usually is a huge part of the battle. Start networking like crazy, get involved, ask questions and ask for help. Aside from that, there are too many people who aren't willing to work long and hard. Prove that you can and employers will be much more likely to give you a shot.