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CBSE Class 10 Answered

 (i)Why does the sun appear reddish at sunset or sunrise?  (ii) For which colour, the refractive index of prism material is maximum and  minimum?
Asked by rushabhjain.avv | 22 Mar, 2019, 04:59: PM
Expert Answer

(i) At Sunset or Sunrise, the sun's rays have to pass through a larger distance in the atmosphere. Most of the blue and other shorter wavelengths are removed by scattering and red light enters our eye. Thus, at sunrise and sunset sky appears reddish.

(ii) Light with the shorter wavelength is refracted the most i.e. blue. While the light with the maximum wavelength is refracted the least i.e.red.

Answered by Shiwani Sawant | 22 Mar, 2019, 05:58: PM
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