Refractive Index: Speed of Light in Medium vs Vacuum

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Sarrah

Dear Sir/Madam, Is the product of the refractive index of a medium and speed of light in the medium equal to the speed of light in vacuum? Thank You.

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RPinPA

Yes.

index of refraction is defined as ##n = c_{vacuum} / c_{medium}## so ##c_{vacuum} = n c_{medium}##

Sarrah

Thank you so much sir.

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