Question

give reason danger signals are red ​

Answer 1

Danger signals are red because red light deviates the least and hence can reach the eye even in fog or mist.

hence danger signals are red in colour.

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Answer 2

Be cause red light has high wavelenght and frequency it is easily visible from a long distance Be cause it scattered more in rainy days or in winter days there is fog and mist and its unable to see the signals that why we use red light Be cause of its high wavelenght

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