TS EAMCET · Physics · Communication System
The radio horizon of a transmitting antenna of height 39.2 m is (Radius of the earth \(=6400 \mathrm{~km}\) )
- A 44.8 km
- B 19.6 km
- C 22.4 km
- D 78.4 km
Answer & Solution
Correct Answer
(C) 22.4 km
Step-by-step Solution
Detailed explanation
\(d = \sqrt{2Rh}\) \(d = \sqrt{2 \times 6400 \times 10^3 \text{ m} \times 39.2 \text{ m}}\) \(d = 22400 \text{ m} = 22.4 \text{ km}\)
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