Hii Kush!
After class 12th you can take admission in BSc biophysics course in the College of your choice. The eligibility criteria states that the Candidate must have passed class 12th with PCB subject combinations from a recognised Board of education. After BSc, you can go for MSc in biophysics and then PhD in biophysics.
The job opportunities are available in fields such as forensics, medical center, research institutes, private and government sectors. You can become a researcher, nutritional biophysicist, clinical biophysicist, medical biophysicist, scientist, applied biophysicist, forensic biophysicist etc.,
Some of the Colleges across India offering the course are-
* University of Calicut, Kerala
* Sripat Singh College, West Bengal
* IMTS, Uttar Pradesh
* GBPU, Uttarakhand
* Jamia Millia Islamia
Etc.,
Hope this helps.
Good luck!