how is the refractive index of a medium related to the speed of light? write the expression for relative refractive index of water with respect to glass.
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The speed of light is faster in water. The Refractive index of water is 1.3 and the refractive index of glass is 1.5. From the equation n = c/v, we know that the refractive index of a medium is inversely proportional to the velocity of light in that medium. Hence, light travels faster in water.
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refractive index is speed of light in vaccum to speed of light in any medium
refractive index of water is 1.33
refractive index of glass is 1.65
so answer is aprox is 0.86
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