Can i do imba after 12 but i have some interest in law also
Yes you can do Integrated MBA like Btech+mBA or BBA+ MBA.
This is generally 5year Integrated course.
If you wish to study Law you must go For BBA+LLB first which is 5year course and then go for 2 year fulltime MBA.
Bba + Llb can be done post 12th and mBA Can onky be done after Graduation .