Question

why red colour is used as a danger signals​

Answer 1

Answer:-

Because Red colour gets scattered the least by the air molecules. And hence it has a large wavelength...

Answer 2

Answer:

The primary reason why the colour red is used as danger signal is that red light is scattered the least air molecules the effect of scattering is inversely related to the fourth power of the wavelength of colour so red light is able to travel the longest distance through fog,rain and the allike

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