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The field strength of the wave at a unit distance from transmitting antenna depends on _____

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The field strength of the wave at a unit distance from transmitting antenna depends on _____

(a) only the power radiated by the transmitting antenna

(b) only on the power received by the receiving antenna

(c) only on directivity of antenna in vertical and horizontal planes

(d) both on the power radiated by the transmitting antenna & directivity in vertical and horizontal planes

I got this question by my college director while I was bunking the class.

I'm obligated to ask this question of Radio Wave Propagation in division Radio Wave Propagation of Antennas

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Correct answer is (d) both on the power radiated by the transmitting antenna & directivity in vertical and horizontal planes

Explanation: The field strength E0 of the wave at a unit distance from transmitting antenna depends on both on the power radiated by the transmitting antenna & directivity in vertical and horizontal planes. The overall field strength is calculated from this. The field strength of the surface wave of flat earth is given by E=AE0/d.

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