Q8.32Multiple choice
A plane EM wave travelling along z direction is described 1 2 z by E = E 0 sin(kz – ωt )ˆi and B = B0 sin(kz – ωt )ˆj . Show that y Fig. 8.2
This question refers to a figure in the original PDF.
- (i)The average energy density of the wave is given by 1 1 B20 u av = ε 0 E02 + . 4 4 µ0
- (ii)The time averaged intensity of the wave is given by I av = cε 0 E 02 .