Forensic Science is a discipline of science that integrates aspects of all science courses , including biology, physics, chemistry, and mathematics. It is primarily designed to recognize, classify, inspect, and testify to all types of physical evidence, which is commonly found in crime scenes. Forensic scientists are expected to operate in a field that combines law enforcement and criminal justice.

Best colleges for Forensic Science :

• Institute of Forensic Science and Criminology , Punjab University , Chandigarh.
• Institute of Forensic Science, Mumbai.
• Gujarat Forensic Science University.
• Government Forensic Science University, Nagpur.

For more details, follow the below link :

Forensic Science Courses after 12th - Eligibility & Top Institutes (careers360.com)

Hii Kaviya!
Forensics is a field of science used to detect and prove crimes through various tests and laboratory experiments.
Forensics is indeed a promising career in India. Having completed the degree in forensics you can jobs into private and government sectors. You can work as crime reporter, detective, forensic scientist, legal counsellor, crime scene investigator, law consultant, forensic engineer etc., The starting salary is between INR 3-4 lakhs per year and increase as per your experience and qualifications.
Some of the Colleges in India offering the course are-
* BHU
*  LPU
* Chandigarh University
* Kasturba Medical College, Manipal
* Government Institute of forensic science, Aurangabad, Maharastra
* Institute of forensic science, Mumbai
Etc.,
Hope this helps.
Good luck!