If ' $c$ ' is the speed of electromagnetic waves in vacuum, then their speed in a medium of dielectric…

If ' $c$ ' is the speed of electromagnetic waves in vacuum, then their speed in a medium of dielectric constant ' $\mathrm{K}$ ' and relative permittivity ' $\mu_{\mathrm{r}}$ ' is ____
  1. $\frac{1}{\sqrt{\mu_{\mathrm{r}} \mathrm{K}}}$
  2. $c \sqrt{\mu_{\mathrm{r}} \mathrm{K}}$
  3. $\frac{\mathrm{c}}{\sqrt{\mu_{\mathrm{r}} \mathrm{K}}}$
  4. $\frac{\mathrm{K}}{\sqrt{\mu_{\mathrm{r}} \mathrm{c}}}$

Solution

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Asked in: AP EAMCET 2017 (25 Apr Shift 1)

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