Hey Renuka.

As you've already competed MBA and now want to pursue Law you can go for a 3 year LLb degree. In this course you will study various subjects of law like Criminal Law, Torts, Contract, Business Law, Company Law, International Law, Property Law, Jurisprudence and more subjects depending on the subjects each college offers. The fees varies in different colleges. There are various government as well as Private institutes which offer this course and hence would differ accordingly. Some colleges might charges as low as 20,000-25,000 for the entire course and some may charge as high as 3 lakhs for the entire course.Here is a list of law entrances for 3 year LLB course -  

DU LLB - Delhi University  

MH CET- GLC mumbai, ILS Pune and other colleges in Maharashtra  

SLAT- Symbiosis Law school  

PU LLB- Panjab University, Chandigarh

    LSAT- Jindal global Law school, IIT Kharagpur and other private law colleges

BHU LLB- Banaras Hindu University 

BVP LLB- Bharatiya Vidyapeeth

TS LAWCET Etc

Best of luck!