Silver bromide (AgBr) is used in photographic films for it's unusual sensitivity to light exposure. It is a replacement for silver chloride and iodide. When producing a film,it is done on silver bromide paper so as to produce high-quality pictures. 
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thanks but can u give a little more data i have to make a project file on it pls it will be a great help
I'm sorry,I don't have any more knowledge on this topic. Please refer to google or wikipedia.