Hey,
Masters of Science(M.Sc) in Forensic is a two year programme. M.Sc in Forensics is designed in a way that can help a student get the advanced knowledge about the theoretical and practical aapects of forensic science.
The eligibility criteria to pursue this course is different for different institutions. Primarily,it includes Bachelors in Science/engineering/pharmacy/medicine obtained from a recognized University with minimum 60 percent aggregate.
The admission is through the marks scored in the last qualifying exam or the entrance test. Different institutions generally conduct different entrance tests. Some institutions offering this course are:
University of Delhi
Manipal University
University of Lucknow
Punjabi University
Bhim Rao Ambedkar University
Hope this helps.
Good luck.