The clear sky appears blue because:

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blue light gets absorbed in the atmosphere

violet and blue lights get scattered more than lights of all other colours by the atmosphere

ultraviolet radiations are absorbed in the atmosphere

light of all other colours is scattered more than the violet and blue colour lights by the atmosphere

answer is C.

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Detailed Solution

Light scattering is influenced by the light's wavelength and dust particle size. The fourth power of wavelength has an inverse relationship with the quantity of scattering. The environment scatters violet and blue light more than all other colours, giving the appearance of a blue sky.

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