On the day of Physical Verification, the documents you have submitted will be matched with your original documents and it will be verified by the authority resulting in the acceptance of your admission permanently. After that you will get home and for doing classes you will notified separately but at the day of physical verification there will be no classes at all.

To know more about UPSEE counselling visit the link below:

https://engineering.careers360.com/articles/upsee-counselling

I hope this answer helps. All the very best for your future endeavors!