A) \[\frac{{{B}^{2}}}{2\lambda }\]
B) \[\frac{{{B}^{2}}}{2{{\mu }_{o}}}\]
C) \[\frac{2{{B}^{2}}}{{{\mu }_{o}}\lambda }\]
D) \[\frac{B}{{{\mu }_{o}}\lambda }\]
Correct Answer: B
Solution :
Energy density of an electromagnetic wave is \[U=\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}+\frac{1}{2}\frac{{{B}^{2}}}{{{\mu }_{0}}}\] So, the magnetic energy density is \[\frac{{{B}^{2}}}{2{{\mu }_{0}}}\].
You need to login to perform this action.
You will be redirected in
3 sec
