Question

A medium of relative permittivity er2 = 2 forms an interface with free space. A point source of EM 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

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1094
Priya

does anyone know the correct answer

569
Rashmi

how did the answer came

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