Question

answer this question​

Answer 1

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. As a result, whether it is fog or smoke, red light passes comparatively easily through them

Answer 2

Hey mate!!

Here's your perfect answer.

1) Colour of the cloudless or clear sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light.

2) Danger signals are red in colour because red light is scattered the least by air molecules. The effect of scattering is inversely related to the fourth power of the wavelength of a colour. Therefore, blue which has the least wavelength of all visible radiations is scattered the most and red which has the highest wavelength of all the colours, we can see is scattered the least. So red light is able to travel the longest distance through fog, rain and alike this.

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