alleryThe reddish appearance of the sun at sunrise and sunset is due to:
AMore reflection by mountains
BSun being closer to earth then
CGreater scattering of blue light along long path
DRefraction by ozone layer
Answer & Solution
Correct answer: C. Greater scattering of blue light along long path
1. Near the horizon, sunlight travels through a much THICKER layer of atmosphere.
2. Most of the BLUE component is scattered away (Rayleigh) long before it reaches the eye.
3. Only red and orange wavelengths penetrate, giving the sun and sky a reddish glow.
_Source: syllabus Science Ch 10 §10.5 (sunset colours)_
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