what is the definition of refractive index?
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In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium. It is defined as. where c is the speed of light in vacuum and v is the phase velocity of light in the medium
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Refractive index:::
the ratio of velocity of light in vacuum to its velocity in a specified medium ......
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the ratio of velocity of light in vacuum to its velocity in a specified medium ......
hope this helps you Plzzz mark it as brainaliest answer
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