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The blue colour of clear sky is due to_______________?

AReflection of light

BRefraction of light

CDiffraction of light

DDispersion of light

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Answer and explanation

Correct Answer: D: Dispersion of light

Explanation: The correct answer is D: Dispersion of light. The blue color of a clear sky is due to the dispersion (scattering) of light by the atmosphere. Blue light has a shorter wavelength and scatters more than other colors when sunlight passes through the atmosphere.

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