Q. The average magnetic energy density of an electromagnetic wave of wavelength $\lambda$ travelling in free space is given by
A) $\frac{B^{2}}{2\lambda}$
B) $\frac{B^{2}}{2\mu_{0}}$
C) $\frac{2B^{2}}{\mu_{0}\lambda}$
D) $\frac{B}{\mu_{0}\lambda}$
Explanation
The correct answer is Option B: $\frac{B^{2}}{2\mu_{0}}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.