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Why is the colour of the sky blue? |
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Answer» \t\xa0The blue colour of the sky is due to the scattering of the sunlight by the molecules present in the atmosphere.\tThe molecules of air, such as N2\xa0and O2, have sizes smaller than the wavelength of visible light. These\xa0molecules absorb some amount of sunlight and re-emit it, as sunlight passes through the atmosphere.\tBlue light of shorter wavelength is scattered more strongly than red light of longer wavelength. This scattered light contains blue light in a larger proportion and it enters our eyes.\xa0That is why the sky appears blue. Dut to atmospheric refraction |
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