Question

why does the sun appear reddish early in Morning

Answer 1

because the sun light has to travel a longer distance and also the red light has longer wavelength.
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Answer 2

It is due to scattering of light. Light near the horizon passes thicker layers of air and larger distance of atmosphere hence, most of the blue light is scattered away and longer wavelengths reach our eyes giving rise to reddish colour of sun.

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