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Silver halides are used in photography b...

Silver halides are used in photography because they are

A

They are photosensitive

B

Soluble in hypo

C

Soluble in `NH_(4)OH`

D

Soluble in acids

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The correct Answer is:
A
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Photography is based on the nature of silver halides. Except AgF, the silver halides are photosensitive. These undergo decomposition in light and turn black due to formation of free silver. 2AgBroverset(light)to2Ag+Br_2 The photography films are prepared by adding 20% aqueous solution of AgNO_3 to NH_4Br solution containing gelatic. When such a film is exposed, emulsion gets affected and a latent image is formed on the film. When this exposed film or plate is dipped ina developer which contains a reducing agent, the part affected most during exposure are reduced to the maximum. The image becomes visible. It is called a negative. The remaining sensitive emulsion on the negative is removed by dissolving it in hypo solution (fixer). Fihnally, a positive of the nagative already prepared is made on silver bromide paper. Q. Silver halides are used in photographgy because these compounds

Why is AgBr used in photography ?

Why is AgBr used in photography?

Which of the following silver halides is used in photography chiefly for the production of colloidal emulsion plates ?

Hypo is used in photography because of its

Why hypo is used in photography?

Hypo is used in photography to

A developer used in photography is-

ERRORLESS -D & P-BLOCK ELEMENTS-Ordinary Thinking (Compounds of d & f block elements)
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