Practicing Success
Practicing Success
CUET Preparation Today
A plane electromagnetic wave of frequency 40 MHz travels in free space in the X-direction. At some point and at some instant, the electric field $\vec{E}$ has its maximum value of 750 N/C in Y-direction. |
The time period of the wave will be: |
$2.5\mu s$ $0.25\mu s$ $0.025\mu s$ None of the above |
$0.025\mu s$ |
$ T = \frac{1}{\nu} = \frac{1}{4\times 10^7} = 0.025\mu s$ |
