Question

What is physical significance of the refractive index of an optically denser medium?

Answer 1

Dear Student,
The refractive index relates how quickly light travels through a given medium. It's a the number by which you divide the speed of light in a vacuum to get the speed of light in the given medium. Or, the number by which you divide the wavelength of the light in a vacuum to get the wavelength of the light the given medium.

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