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Q.

Is it true that the absolute refractive index is the ratio of the speed of light in a vacuum to the speed of light in a medium?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is True.
The refractive index of a medium with respect to vacuum is considered to be its absolute refractive index. It is always greater than 1. It is also equal to the speed of light in a vacuum to the speed of light in the medium. The refractive index of a medium can be calculated using the following formula

n = \frac{c}{v}

Where

n

is the refractive index

c

is the velocity of light in a vacuum

v

is the velocity of light in the medium

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