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What is the most suitable scientific reason for commonly using three primary colours?

Answer and explanation

Correct answer: Human vision mainly uses responses from three cone types

The scientific basis is trichromatic colour vision. Human retinas contain three main cone types with different spectral sensitivities; the brain interprets their combined response as colour. Colour systems therefore use three carefully chosen channels to approximate a wide range of visual sensations. Nature does not contain only three colours, pigments do not all share three ingredients, and cost is not the governing reason.

Related tags

Trichromatic VisionCone CellsPrimary ColoursColour TheoryArt EducationClass 9 Mcq

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