A) \[1280\,m\]
B) \[1125\,m\]
C) \[1560\,m\]
D) \[79\text{ }m\]
Correct Answer: B
Solution :
[b] Height of transmitting antena is given by: \[d=\sqrt{2R{{h}_{T}}},\,\,\,\,\,\,{{h}_{T}}=\frac{{{d}^{2}}}{2R}\] \[{{h}_{T}}=\frac{{{(120\times {{10}^{3}}m)}^{2}}}{2\times 6400\times {{10}^{3}}m}=1125m\]
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