![A uniform plane wave traveling in free space and having the electric field](https://www.gkseries.com/blog/wp-content/uploads/2023/09/A-uniform-plane-wave-traveling-in-free-space-and-having-the-electric-field.jpg)
Q. A uniform plane wave traveling in free space and having the electric field
![](https://www.gkseries.com/blog/wp-content/uploads/2023/09/image-104.png)
is incident on a dielectric medium (relative permittivity > 1, relative permeability = 1) as shown in the figure and there is no reflected wave.
![](https://www.gkseries.com/blog/wp-content/uploads/2023/09/Screenshot-988.png)
The relative permittivity (correct to two decimal places) of the dielectric medium is
Ans: 2
Sol:
The wave has Ei direction and propagation direction both in same plane (ZX). the wave is plane of incidence (P) polarized.
![](https://www.gkseries.com/blog/wp-content/uploads/2023/09/Screenshot-989.png)
.