HI, Incase after graduation you are willing to shift from finance to law. So you have law of 3 years to pursue.
You can study for 3 year law from the following colleges:
1. DU
(conducts DU LLB)
2. BHU
(conducts BHU LB)
3. Maharashtra Common Entrance Test for Law
You can even check the complete list of law exams here: http://www.law.careers360.com/exams

Good Luck.