The clear sky appears blue, because

Options

A. blue light gets absorbed in the atmosphere
B. ultraviolet radiations are absorbed in the atmosphere
C. violet and blue lights get scattered more than lights of all other colours by the atmosphere
D. light of all other colours is scattered more than the violet and blue colour lights by the Atmosphere

Answer

C

Explanation

A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. Rayleigh scattering is inversely proportional to the fourth power of wavelength, so that shorter wavelength violet and blue light will scatter more than the longer wavelengths (yellow and especially red light)