When a plane wave traveling in free space is incident normally on a medium having εr = 4.0, the fraction of power transmitted into the medium is given by
A. $$\frac{8}{9}$$
B. $$\frac{1}{2}$$
C. $$\frac{1}{3}$$
D. $$\frac{5}{6}$$
Answer: Option A
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