Question : Silver halides are used in photographic plates because they are
Option 1: oxidised in air
Option 2: soluble in hyposolution
Option 3: reduced in light
Option 4: totally colourless
Correct Answer: reduced in light
Solution : The correct option is reduced in light.
Silver halides are used in photographic plates because they are light-sensitive compounds. When exposed to light, silver halide crystals undergo a chemical reaction that forms a latent image. This latent image can be developed to create a visible image on the photographic plate. This property makes silver halides crucial for capturing and preserving images in traditional film photography.
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