Question

write formula for refractive index of a medium... please answer correctly...​

Answer 1

The refractive index can be seen as the factor by which the speed and the wavelength of the radiation are reduced with respect to their vacuum values: the speed of light in a medium is v = c/n, and similarly the wavelength in that medium is λ = λ0/n, where λ0 is the wavelength of that light in vacuum.

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Answer 2

Answer:

• Refractive Index (n) =c (Velocity of light in vaccum) /v (velocity of light in the medium)
• n=c/v