Answers

2016-02-28T14:38:48+05:30
Light from the Sun near the horizon passes through thicker layers of airand longer distance .Most of the blue light and shorter wavelengths of sunlight are scatteredĀ away by the particles. Light of larger wavelength reaches us giving thereddish appearance
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2016-02-28T18:18:30+05:30
Due to atmospheric refraction only light of higher wavelength which is red is seen to our eyes thus the sky appears red
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