Dear Saurabh JNU does not offer LLB course. Dear, you can opt LLB after 10+2 and its duration is three years. You can opt integrated undergraduate degree BA LLB, BSC LLB, BBA LLB, BCom, LLB and its duration is 5 years or you can do separately Master in law duration of 2 years.The minimum criteria for entrance age are you must attend 17 years age.

All the best