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Why may a red object appear very dark under blue light?

Answer and explanation

Correct answer: It reflects very little blue light

The governing concept is selective reflection: an object’s apparent colour depends on both its surface properties and the light illuminating it. A red object mainly reflects red wavelengths and absorbs much of the other available light. Under blue illumination, little red light is present and the object reflects relatively little blue, so it can look very dark. Option A is correct; the other statements misuse emission, colour, or reflection.

Related tags

Coloured LightRed ObjectSelective ReflectionColour MixingColour TheoryArt EducationClass 9 Mcq

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