Hello Shaina,
An aspirant of PU BA LLB 2019 need to have passed their 10+2 examination with at least 50% marks in the qualifying examination from any recognized board/university
For the candidates belonging to reserved categories, 45% is needed in the qualifying degree of 10+2 examination. 
Candidates who have acquired 10+2 qualifying degree from Open Universities directly without having any basic qualification will not be considered eligible for the law examination administered by Panjab University. 
PU BA LLB Eligibility Criteria 2019 - Age Bar 
As per the Supreme Court’s stay on age bar in 2017, there is no age bar to appear in the exam