Question

what is refractive index ? how it variants with speed of light
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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:

The ability of a transparent medium to bend a light up to an extent is known as refractive index of that medium.

Explanation:

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,.

Done ...............