AIIMS 2018 Physics Scattering of Light Assertion Reason Question
Assertion: Sky is maximum red in morning
Reason: Smallest wavelength scatter maximum.
Both assertion and reason are true, and reason is the correct explanation of assertion.
Both assertion and reason are true, but reason is not the correct explanation of assertion.
Assertion is true, but reason is false.
Both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion that the sky appears maximum red in the morning is true due to the scattering of shorter wavelengths of light (blue and violet) by atmospheric particles, allowing longer wavelengths (red) to dominate the view, especially during sunrise. The reason provided, that the smallest wavelength scatters maximum, correctly explains this phenomenon as Rayleigh scattering, where shorter wavelengths scatter more effectively than longer ones.
Option B is incorrect because, while both statements are true, the reason directly supports the assertion. Options C and D are incorrect as they misrepresent the truth of both the assertion and the reason. Understanding this concept highlights the role of light scattering in atmospheric optics, particularly during different times of the day.
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