Hi Harish !

•The scope for  forensic science study is huge ,especially in governments & private sectors. 

•These professionals can work in various law enforcing agencies and investigation departments such as police, investigative services of central and state government and legal system. 

•You can also start  your own forensic practice & forensic service offices. You can also be employed in Forensic Laboratories, Detective Offices, Banks and other Govt. and private agencies.

•Forensic scientists also visit the crime scene for evidence collection and can perform analysis in the lab on the same.

•A trained forensic scientist can be hired by Central Bureau of Investigation (CBI) & Intelligence Bureau (IB). Other career options are freelancers and counsellors on the same .

•Teaching is another career for forensic scientists that can prove to be interesting . You can deliver in the institutes that teach forensic science.

•After finishing a qualification in forensic science, the starting salary can be between Rs. 3 L to Rs. 4 L per annum. 

•With more experience, these professionals can even earn Rs 6 L to Rs 8 L per year.

The difficulty level depends on your passion and interest to pursue forensic science. This is somewhat of a niche area , hence if you are really passionate about having a career in this field , you should be able to finish the course with flying colors. 

Hope this helps, All the best!