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How is refractive index related to velocity of light in vacuum to the velocity of light in a given medium?

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Question

How is refractive index related to velocity of light in vacuum to the velocity of light in a given medium?

Very Short Answer
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Solution

The absolute refractive index, μ, is the ratio of the speed of light in vacuum, c, to its speed in the medium, V:

`μ = c / V`

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Chapter 4: Refraction of Light - EXERCISE-1 [Page 71]

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Goyal Brothers Prakashan A New Approach to ICSE Physics [English] Class 10
Chapter 4 Refraction of Light
EXERCISE-1 | Q 1. (d) | Page 71
Goyal Brothers Prakashan A New Approach to ICSE Physics [English] Class 10
Chapter 4 Refraction of Light
EXERCISE-1 | Q 8. (c) | Page 72
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