Hello Aspirant,

In NEET 2020 Admit Card you have to paste your latest passport/postcard size photograph which you have uploaded during the application and the size of photograph should be 4"*6".

You also have to carry at least two same photographs with you at the exam center.  The photograph you can padte on the admit card before leaving your hone, at center you have to only sign the undertaking mentioned in your admit card in front of the Invigilator.

For more details refer to the link given below :-

https://www.google.com/amp/s/medicine.careers360.com/articles/neet-2020-photo-size-format-documents/amp

I hope this information helps you.

Good Luck!!