Question

what is the left behind on the photographic film when it is exposed to sunlight​

Answer 1

The light sensitivity of the silver halides is key to the photographic process. Tiny crystals of all three of these compounds are used in making photographic film. When exposed to light, a chemical reaction darkens the film to produce an image.

Answer 2

Explanation:

when photographic film that is made up of Silver Bromide exposed to sunlight silver and Bromide differently are left behind