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Red and green light produce yellow, but red and green pigments do not. What is the main reason?

Answer and explanation

Correct answer: Light mixing is additive and pigment mixing is subtractive

The governing concept is the difference between additive and subtractive colour systems. Red and green beams add their light wavelengths, so the eye can perceive yellow. Pigments do not emit light; they selectively absorb wavelengths, and combining them removes more reflected light. Therefore, option A is correct. Options B, C and D contradict the basic behaviour of light and pigments.

Related tags

Additive MixingSubtractive MixingLightPigmentsColour MixingColour TheoryArt EducationClass 9 Mcq

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