why are danger signals lights red in colour
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Explanation:
The major reason for red to be used as a danger signal is its wavelength. ... Longer the wavelength, lesser will be the scattering of light. Now, among the colors of visible light, red has the longest wavelength. Hence, it is least scattered by the atmospheric particles.
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Answer:
Danger signals are red in color because it is scattered the least by air molecules. ... Since the color red has the highest wavelength of all the colors we can see it scattered the least. So, red light is used as a danger signal as it is able to travel the longest distance through the fog, rain, etc.
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