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(i) Why does the sun appear reddish at s...

(i) Why does the sun appear reddish at sun-set or sun- rise ?
(ii) For which colour the refractive index of prism material is maximum and minimum ?

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At sunrise light has to travel longest distance in atmosphere, light other than red gets scttered more and get lost in sky. Red light has long wavelength, scatters the least and reaches the observer.
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ICSE-SAMPLE QUESTION PAPER 4 -SECTION B
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