After completing 12th you are eligible for 5 years law programme (B.A LLb), you can not apply for LLB programme (3 years law programme). As per the eligibility criteria to apply for 5 years law programmes you should have minimum score 45% in 10+2 & 40% as SC & ST category. To check complete information about TS Law CET you can go through with given below link.

TS Law CET Eligibility

Good Luck!