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Sky is blue why?

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Sky is blue why?

    • Posted by Kishan Salvi 6 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Gaurav Seth 6 years, 3 months ago

    •  The blue colour of the sky is due to the scattering of the sunlight by the molecules present in the atmosphere.
    • The molecules of air, such as N2 and O2, have sizes smaller than the wavelength of visible light. These molecules absorb some amount of sunlight and re-emit it, as sunlight passes through the atmosphere.
    • Blue 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. That is why the sky appears blue.

    2Thank You

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