Hello aspirant,

Hope you are doing well...!!

Yes, it is beneficial. If you solve the past year's JEE paper for Chemistry and Physics then you can gain lots of concepts that will help you in NEET. Many times JEE's main questions were directly asked in the medical NEET paper.

The portion of physics and chemistry are the same for JEE Mains and NEET. The syllabus for both the exams is almost the same but there is a difference in difficulty level. Questions asked in JEE Main are difficult in comparison to Medical.

I hope this information helps you!

All the best!