Hii Sree!
Forensics is indeed one of the best fields offering a promising career in India. After completing your degree in forensic sciences, you may opt to become a crime investigater, work in a detective office, a laboratory, research, crime reporter, forensics engineer, legal counselor etc., The salary starts from approximately INR 3-4 Lakhs per annum and goes upto or more than INR 6-7 lakhs per annum, based on your experience and qualifications.
Hope this helps.
Good luck!