Question

The image on an exposed and developed photographic film is due to:

• A. $AgBr$
• B. $\left[Ag\right(C_2{O}_3{)}_2{]}^{3+}$
• C. $Ag$
• D. $A{g}_{2}O$

Answer 1

Answer: (C)

$Ag$

A strip or sheet of transparent plastic film base is coated with gelatin emulsion containing small light sensitive silver halide crystals on one side. When the exposed silver halide grains are developed, they are converted to metallic silver which appears as the black part of the film due to blocking of light.

Therefore, the image on an exposed and developed photographic film is due to $Ag$.