1. Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
(a) Dispersion of light
(b) Scattering of light
(c) Total internal reflection of light
Reflection of light from the earth

Question

1.	Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
(a)	Dispersion of light
(b)	Scattering of light
(c)	Total internal reflection of light
Reflection of light from the earth

Accepted Answer

Answer is (b) Scattering of light
Explanation:
Because red color scatters the least it travels long distance. During sunset or sunrise light has to travel long distance to reach the earth. Hence light will be red when it reaches us.

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