Question

does black colour have any wavelength? as black colour is when there is absence of light
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Answer 1

Answer:

see black is observed when all the wavelength of light falling on it get cancelled

so, it means black is nothing but zero wavelength

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Answer 2

Answer:

Visible light is electromagnetic radiation with wavelengths ranging from roughly 400 and 700 nanometers. In physics, a color is visible light with a specific wavelength. Black and white are not colors because they do not have specific wavelengths. ... Black, on the other hand, is the absence of visible light.