Dear Aman,
Greetings
Just go through this is information :
LLB ELIGIBILITY CRITERIA :
The minimum eligibility criteria for L.L.B. course is listed below:

• Successful completion of graduation in any discipline.
• Minimum 45% marks in graduation are required for general category and 40% for reserved categories.
• There is also a criterion for minimum marks required in graduation which may vary from institute to institute.
• There is no age limit for taking admission in this course.
• So according  to this information you get to know that only 12th marksheet will be needed at the time of admission

I hope this helps!

Hello Aman! No, you need your 12th marksheet only at the time of admission. 11th standard marksheet is not needed at the time of admission. Hope this helps.