The ratio of speeds of electromagnetic waves in vacuum and a medium, having dielectric constant $k =

Question

The ratio of speeds of electromagnetic waves in vacuum and a medium, having dielectric constant $k = 3$ and permeability of $\mu = 2\mu_{0}$, is( $\mu_{0} =$ permeability of vacuum)

Accepted Answer

$\frac{C}{V} = \mu = \sqrt{\varepsilon_{r}\mu_{r}}$$$\frac{C}{V} = \sqrt{\frac{3 	imes 2}{1}} = \frac{\sqrt{6}}{1}$$

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