According to the Tendulkar methodology, what was the estimated percentage of people below the poverty line in rural areas in 2011-12?
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A.
0.257
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B.
0.2
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C.
0.275
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D.
0.155
Correct Answer:
A. 0.257
Explanation:
The correct answer is that light travels faster in that medium than in a vacuum.
The absolute refractive index (n) is defined as the ratio of the speed of light in a vacuum (c) to its speed in a specific medium (v), expressed by the formula n = c/v. Under standard conditions, light is at its maximum speed in a vacuum, meaning the speed in any other material is slower, typically resulting in a refractive index greater than 1. If the index is less than 1, it indicates the phase velocity of the light waves within that substance is exceeding the universal constant c. While this occurs in specific cases like X-rays or plasma, it refers to the velocity of wave crests rather than the speed at which physical information or signals travel.
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