JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 24
question_answer
In an electromagnetic wave, the amplitude of electric field is 1 V/m. The frequency of wave is \[5 \times 1{{0}^{14}}Hz\]. The wave is propagating along z-axis. What will be the average energy density of electric field, in\[joule/{{m}^{3}}\]?