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Assertion In the absence of atmosphere the sky would appear black. Reason Atmosphere scatters the light and hence we get blue colour.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Correct answer: Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Solution

The sky looks blue because air molecules scatter shorter wavelengths of sunlight more strongly. Without an atmosphere, there would be no scattering, so the sky would appear black; thus the reason correctly explains the assertion.

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