Question

refractive index of material is approximately equal to square root of​

Answer 1

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Answer 2

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Refractive index of a material follows the Cauchy Dispersion formula. Again, refractive index is square root of DIELECTRIC CONSTANT. BUT, FOR WATER , DIELECTRIC CONSTANT IS 81, BUT REFRACTIVE INDEX IS NOT SQUARE ROOT OF 81, rather 1.33.

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