A medium of relative permittivity εr2 = 2 form an interface with free-space. A point source of electromagnetic energy is located in the medium at 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
A. 2π m2
B. π2m2
C. $$\frac{\pi }{2}{{\text{m}}^2}$$
D. π m2
Answer: Option D
This Question Belongs to Electronics And Communications Engineering >> Electromagnetic Field Theory
Related Questions on Electromagnetic Field Theory
A loop antenna is a commonly used for
A. Radar
B. Direction finding
C. Satellite communication
D. All of the above
The divergence of a vector is a scalar, while the curl of a vector is another
A. Scalar
B. Vector
C. Unit vector
D. None of the above
Which antenna is a wideband antenna?
A. Hertz antenna
B. Marconi antenna
C. Folded dipole
D. None of the above
A. Accelerating
B. Retardation
C. Oscillating
D. Lagging the current
Join The Discussion