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Question

Why is night sky black and early morning sky is blue?

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Solution

The change in the colour of sky is due to the presence of sunlight which allow this colour change to happen. The colour of the sky changes as the intensity, direction of incident and reflection of sunlight on the atmosphere or sky changes with the time from morning to evening . Since at night no sunlight is available to reach the earth atmosphere therefore sky appears to show dark colour having no colour.

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