Which colour deviates the most in forming a spectrum of white light by a prism?

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Violet

Blue

Yellow

Red

answer is A.

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Detailed Solution

Violet is the most deviated colour in forming a spectrum of white light by a prism.
White light comes in various wavelengths, each with its unique variation. The violet colour also has the shortest wavelength. Therefore, the violet colour will diverge the most when it moves from one medium to another since it has the highest angle of incidence value.

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