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Refractive Index

If Vc is th...

Question

If $V_{c}$ is the speed of light in vacuum and $V_{m}$ the speed of light in a given medium, the refractive index of the medium is :

V_{m} / V_{c}

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V_{c} / V_{m}

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V_{m} \times V_{c}

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V_{m} + V_{c}

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Solution

The correct option is A $V_{c} / V_{m}$
Answer is B.

Refractive index is the ratio of the velocity of light in a vacuum to its velocity in a specified medium.
Hence, $μ = \frac{V_{c}}{V_{m}}$ .

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