CBSE Class 10 Science 2016 Term II Delhi Set 2

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Question : 10
Total: 11
What is meant by scattering of light ? The sky appears blue and the sun appears reddish at sunrise and sunset. Explain these phenomena with reason .
Solution:  
Scattering of light is the phenomenon of spreading of light in all directions by minute particles in a medium. The sky appears blue because the blue colour of sunlight due to its shorter wavelength scatters much more strongly. Than the other colour by particles in the atmosphere.
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