Question

Find the virtual height h when the angle of incidence is 600 and distance of separation 120km.

(a) 60km

(b) 64.34km

(c) 34.64km

(d) 72.42km

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This interesting question is from Virtual Height in portion Virtual Height, Critical Frequency and Muf of Antennas

Answer 1

Correct answer is (c) 34.64km

Easiest explanation: Virtual height \(h=\frac{d/2}{\sqrt{secθ_i^2-1}}=34.64km\)