The physical significance of refractive index can be understood as :-

the density of the medium.

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how fast the light is moving in that medium.

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how much air resistance the medium has.

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All of these

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Solution

The correct option is B
how fast the light is moving in that medium.

The factor by which the speed of light gets decreased is governed by one of the optical property of the medium, called refractive index which is defined as,
n= speed of light in vacuum/speed of light in the medium
Where, n is the refractive index of the medium

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Similar questions

1.5.

6000 A^{0}

10^{8}

10^{8}

μ = 1.5

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