Electromagnetic waves travel in a medium which has relative permeability `1.3` and relative permittivity `2.14`. Then the speed of the electromagnetic wave in the medium will be

Options

A. `36xx10^6m//s`
B. `1.7xx10^2m//s`
C. `36xx10^8m//s`
D. `1.7xx10^8m//s`

Answer

d

Explanation

Here, `mu_0r=1.3, epsilon_r=2.14`.
As `v=c/(sqrt(mu_rin_r))=(3xx10^8)/(sqrt(1.3xx2.4))-(3xx10^8)/1.77`
`1.7xx10^8m//s`