Hey.
Considering your score in entrance exam is 48 and that your Graduation score is 50% you seem to have a nor much  chances for admission in PU. Your combined merit score would be around 49.
There are 300 seats each for LLB in the Chandigarh campus, 60 each in regional centres.
So considering the fact that your entrance rank is quite less but your graduation marks are quite average too, so your chances seem less There are no chances for Chandigarh campus and less chances for regional centres. You can try for regional centres in the subsequent counselling. Sowait for the final ranks to be out for a better estimate. But as of now chances seem less.
Best of luck