During the mid ninteenth century, Daguerro-type portraits were very popular. A portrait image of a person was made on silver plated copper by developing the image with ?

Silver bromide

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Mercury vapour

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'Hypo' (sodium hypochlorite)

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An iodine solution

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Solution

The correct option is B Mercury vapour
The latent image was developed to visibility by several minutes of exposure to the forms given off by heated mercury in purpose made developing box.
So development process of Daguerro-type portraits is done with Mercury Vapour.

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During the mid ninteenth century, Daguerro-type portraits were very popular. A portrait image of a person was made on silver plated copper by developing the image with ?

The correct option is B Mercury vapourThe latent image was developed to visibility by several minutes of exposure to the forms given off by heated mercury in purpose made developing box.So development process of Daguerro-type portraits is done with Mercury Vapour.

The correct option is B Mercury vapour
The latent image was developed to visibility by several minutes of exposure to the forms given off by heated mercury in purpose made developing box.
So development process of Daguerro-type portraits is done with Mercury Vapour.