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Q.

When light propagates through a material medium of relative permittivity $\in_{r}$ and relative permeability $μ_{r}$ , the velocity of light, $ν$ is given by : (c - velocity of light in vacuum)

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a

$v = \sqrt{\frac{μ_{r}}{ϵ_{r}}}$

b

$v = \sqrt{\frac{ϵ_{r}}{μ_{r}}}$

c

$v = C$

d

$v = \frac{c}{\sqrt{ϵ_{r} μ_{r}}}$

answer is C.

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Detailed Solution

$V = \frac{C}{\sqrt{μ_{r} \in_{r}}}$

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