Q2 of 30 Page 98

A 100m long antenna is mounted on a 500m tall building. The complex can become a transmission tower for waves with λ;

The antenna size must be about one fourth the wavelength of the signal to be transmitted by the antenna. Or, the wavelength of the signal should be about four times the wavelength of the antenna transmitting the signal. Hence, the answer is (a) as four times 100 gives 400.

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