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    Question

    The phenomenon of light associated with the appearance

    of blue colour of the sky is –
    A Interference Correct Answer Incorrect Answer
    B Reflection Correct Answer Incorrect Answer
    C Refraction Correct Answer Incorrect Answer
    D Scattering Correct Answer Incorrect Answer

    Solution

    During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface or region scattered with stars. Except for light that comes directly from the sun, most of the light in the day sky is a result of scattering, which is dominated by a small- particle limit called Rayleigh scattering.

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