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Why is refractive index in a transparent...

Why is refractive index in a transparent medium greater that one?

A

Because the speed of light in vacuum is always less that speed in a transparent medium.

B

Because the speed of light in vacuum is always greater than the speed in a transparent medium.

C

Frequency of wave changes when it crosses medium

D

None of these.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
`mu = ("Speed of light in vacuum")/("Speed of light in medium") = ( c)/(v)`
`As c gt v, mu gt 1`
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