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Question
Sunset is red because at that time the light coming from the sun has to travel:
Options
lesser thickness of earth's atmosphere
greater thickness of earth's atmosphere
varying thickness of earth's atmosphere
along the horizon
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Solution
Greater thickness of the earth's atmosphere
Explanation:
The sun appears red at sunset because, at that time, the sun is near the horizon and, therefore, sunlight has to travel through a greater thickness of the earth's atmosphere.
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