Hello  Aspirant

When you fill the form for JEE Mains or Advance, you get the option to choose your medium of question for the question paper. Earlier there were only two  option for this- English and Hindi. But now, with the advent of NEP 2020, applicants now get to choose from many languages such as English, Hindi, Assamese, Bengali, Gujarati, Kannada, Malayalam, Marathi, Odia, Punjabi, Tamil, Telugu, and Urdu.

If a candidate chooses English, then their medium would only be English. But, if they choose any other regional language, they'll get the question paper in both their chosen language and English as well. So, if you choose Hindi, your paper will be in Hindi and English medium both.

Hope this helps