19. When the Sun is near the horizon during the morning or evening, it appears reddish. The phenomenon that is responsible for this observation is A.Reflection of light B.Refraction of light C.Dispersion of light D.Scattering of light
Option D Solution: The red colour in the sky at sunset (and sunrise) is due to an effect called Rayleigh scattering. There is a similar form of scattering called Mie scattering which is responsible for the white colour of clouds.
