Two identical antennas on identical towers are separated from each other by a distance of 45 km. What should be the minimum height of receiving antenna to receive the signals in line of sight? (Assume radius of earth is 6400 km)

Correct Option - 3


Detailed Solution:

d = √ (2hT R) + √ (2hR R) = 2√ (2hR) (assuming towers are identical)
h = d²/ (8R) = (45×10³)²/ (8×6400×10³) ≈ 39.55 m

 

<p>d = √ (2hT R) + √ (2hR R) = 2√ (2hR) (assuming towers are identical)<br>h = d²/ (8R) = (45×10³)²/ (8×6400×10³) ≈ 39.55 m</p><div class="photo-widget-full"><div class="figure"><picture><source srcset="" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/1755693722phpHi2tbp.jpeg" alt="" width="414" height="181" loading="lazy"></picture></div></div><p>&nbsp;</p>

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