Question

what is refractive index? (definition) find refractive index of water with respect to air.
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Answer 1

Refractive index is defined as the ratio of the speed of light in a vacuum to its speed in a specific medium. Given parameter. The refractive index of water with respect to air (n_{a}^{w}) = 1.33.

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Answer 2

Answer:

, The amount of change in speed of light in a medium depend upon the property of medium(refractive index) Refractive index is a measure of how much speed of light changes when it enter the medium from air. Absolute refractive index is the ratio of speed of light in vacuum or air to speed of light in the medium

Refractive index is not defined for one material with respect to another. Each material has its own refractive index.

The refractive index of air is about 1.0003, and the index of water is about 1.333. Of course these indices change with wavelength, temperature, pressure, and other conditions

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