Hello nirmal,

Hope you're doing well.

Minimum 50% aggregate is required in class 12th from a recognized board to secure admission in ravenshaw university. This is the eligibility. However,  admissions are all about merit, you'll be given admission on the basis of your marks in class 12. There are a total of 80 seats there.

After looking at previous years(last 5 years) cut offs  ontheir official website,  70-75% is the cut off for general category, for SC and ST , it'll be 60-65%.

Hope my answer helps you.

All the best ! :)