Why is the colour of sky blue?
Answers
The molecules of air and other fine particles in the atmosphere have size smaller than the wavelength of visible light. These are more effective in scattering light of shorter wavelengths at the blue end than light of longer wavelengths at the red end. When sunlight passes through the atmosphere, the fine particles in air scatter the blue colour more strongly than red. The scattered blue light enters our eyes. Since we see the blue light from everywhere overhead, the sky appears blue.
Colour of the sky is blue due to the atmospheric refraction .
Because when sun ray get scattered after striking small gas molecules or dust particles of atmosphere.
It scattered blue most as the wavelength of blue colour is matches with these small gas molecules or dust particles.
I hope it will help you.