TS EAMCET · Physics · Communication System
When the receiving antenna is on the ground, the range of a transmitting antenna of height 980 m is
(Radius of the earth \(=6400 \mathrm{~km}\) )
- A 56 km
- B 112 km
- C 72.4 km
- D 224 km
Answer & Solution
Correct Answer
(B) 112 km
Step-by-step Solution
Detailed explanation
\(d = \sqrt{2Rh}\) \(d = \sqrt{2 \times 6400 \times 10^3 \mathrm{~m} \times 980 \mathrm{~m}} = 112000 \mathrm{~m}\) \(d = 112 \mathrm{~km}\)
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