Primary colours of light are those colours that cannot be produced by mixing other colours of light, and from which a wide range of other colours can be created by mixing. In additive colour mixing (mixing of light), the primary colours are Red, Green, and Blue (RGB). This is the basis for how colours are displayed on screens (TVs, monitors, phones).
Which of the following are the primary colours of light ?
Asked in UPSC NDA 1 2021 · Topic: Optics (Reflection and Refraction at plane and spherical surfaces)
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