AP EAMCET · PHYSICS · Electromagnetic Waves
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 ____
- 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 \(\frac{\mathrm{K}}{\sqrt{\mu_{\mathrm{r}} \mathrm{c}}}\)
Answer & Solution
Correct Answer
(C) \(\frac{\mathrm{c}}{\sqrt{\mu_{\mathrm{r}} \mathrm{K}}}\)
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