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What is refractive index? |
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Answer» @❥╬٨ـﮩﮩ❤٨ـﮩﮩـ╬❥the refractive index of a material is a dimensionless NUMBER that describes how fast LIGHT travels through the material. It is defined as n={\frac {C}{V}}, where c is the speed of light in vacuum and v is the phase velocity of light in the medium. |
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