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electronics and communication engineering electromagnetic field theory
1. In terrestrial microwave links, the number of 'fades' per unit increases as
(A): both the transmission and the distance between the antennas are increased
(B): both the transmission frequency and distance between the antennas are decreased
(C): the transmission frequency is decreased but the distance between the antennas is increased
(D): the transmission frequency is increased but the distance between the antennas is decreased
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