Simran there is no fixed cut-off for B.Sc Physics Hons admission in Punjab University, Chandigarh. They use your CET score and the marks obtained in 12th class with different weightage to create an aggregate score which is further used to make a merit list and then you get the seat according to your merit rank. Although your 12th CBSE % is good but still with your 74 percentile in CET the chances of getting B.Sc in Physics is moderate. As there are no fixed previous year cut-offs available so it is very hard to comment on your admission.

Feel free to ask if you have any more queries. All the best!!