0 0 votes A medium of relative permittivity $\varepsilon_{r 2}=2$ forms an interface with free-space. A point source of electronagnetic energy is located in the medium at a depth of $1$ meter from the interface. Due to the total internal reflection, the transmitted beam has a circular cross-section over the interface. The area of the beam cross-section at the interface is given by $2 \pi \; m^{2}$ $\pi^{2} \mathrm{~m}^{2}$ $\frac{\pi}{2} \mathrm{~m}^{2}$ $\pi \; \mathrm{m}^{2}$ Plane waves and properties gate2006-ec electromagnetics plane-waves-and-properties physics + – admin 264 views answer comment Share Follow Add Sync Questions Print 0 reply Please log in or register to add a comment.
