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Question: Answered & Verified by Expert
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 ____
PhysicsElectromagnetic WavesAP EAMCETAP EAMCET 2017 (25 Apr Shift 1)
Options:
  • A $\frac{1}{\sqrt{\mu_{\mathrm{r}} \mathrm{K}}}$
  • B $c \sqrt{\mu_{\mathrm{r}} \mathrm{K}}$
  • C $\frac{\mathrm{c}}{\sqrt{\mu_{\mathrm{r}} \mathrm{K}}}$
  • D $\frac{\mathrm{K}}{\sqrt{\mu_{\mathrm{r}} \mathrm{c}}}$
Solution:
2408 Upvotes Verified Answer
The correct answer is: $\frac{\mathrm{c}}{\sqrt{\mu_{\mathrm{r}} \mathrm{K}}}$
No solution. Refer to answer key.

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