A) Ground wave propagation is for high frequency transmission
B) Sky wave propagation is facilitated by ionospheric layers.
C) Space wave is of high frequency and is suitable for line of sight communication
D) Very high frequency waves cannot be reflected by the ionospheric layers.
Correct Answer: A
Solution :Ground wave propagation is a method of radio frequency propagation that uses the area between the surface of the earth and the ionosphere for transmission. The ground wave can propagate a considerable distance over the earth's surface particularly in the low frequency and medium frequency portion of the radio spectrum.
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