Question

Why sun appears reddish during sunrise and sunset?

Answer 1

Answer:

the sun appears to be reddish during sunrise and sunset because the red colour is refracted in all the sky...this is due to the atmospheric refraction

Answer 2

Answer:

During sunrise, the light rays coming from the Sun have to travel a greater distance in the earth’s atmosphere before reaching our eyes.

In this journey, the shorter wavelengths of lights are scattered out and only longer wavelengths are able to reach our eyes.

Since blue colour has a shorter wavelength and red colour has a longer wavelength, the red colour is able to reach our eyes after the atmospheric scattering of light. Therefore, the Sun appears reddish early in the morning.