Question

The electric field of a uniform plane electromagnetic wave in free space, along the positive x direction, is given by $\overrightarrow{E}=10({\hat{a}}_y+j{\hat{a}}_z)e^{-j25x}$. The frequency and polarization of the wave, respectively, are

Answer 1

Ans : (a)

Out of phase by ${90}^{\circ }$ and equal amplitude the wave is circularly polarized.

Check the trace of E with the time which gives left circular polarized.

$a_y=sin\omega t$

$a_z=cos\omega t$