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With the help of a labelled diagram. Exp...

With the help of a labelled diagram. Explain why the sun appears reddish at sunrise and sunset.

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Blue colour is scattered the most and red colour the least by air molecules and particles in the earth.s atmosphere. At noon, only little blue and violet colours are scattered and hence, the sun appears white. At sunrise or sunset, sunlight passes through a longer distance in the atmosphere. En route, blue colour [shorter wavelengths] would have been mostly removed by scattering leaving behind red colour [longer wavelengths] which reaches our eyes.
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ZEN PUBLICATION-THE HUMAN EYE AND THE COLOURFUL WORLD-ZEN ADDITIONAL QUESTIONS SECTION - SHORT ANSWER TYPE QUESTIONS - II
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  16. Draw a ray diagram to show the path of light that enters the glass pri...

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