I haven't studied in 11th grade hlw can i clear jee

It's nothing late to start your preparation my dear friend. Be confident and start your preparation with prefect plan and stick to it. First go through the concepts which you feel easy and comfortable and later on get back to the remaining concepts. And also don't be in a hurry to cover all the concepts it never helps you in a jee. Whatever concepts you learned be perfect in them. And do more  practice in those concepts. Just find your stronger areas and make them strongest and later on focus on the weaker one's. So start your preparation now it self.
All the best!!

Don't worry my friend, even if you start your study now then too you can crack JEE. All you need is HARD WORK!
-cheers :)

You have a very little time left. Try to focus on 12th topics which you already know and the imp ones of 11th topics. Try to solve questions and see if you can understand. Try as many questions as possible.

Hello Anurag! You should start preparing for JEE as well as also study in your 11th and 12th very well and get clear with the concepts thoroughly. Work hard and you will get through it. All the best!