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If an antenna radiates electromagnetic wave from a height of h the range of coverage d is given by where R is radius of earth

$\begin{array}{1 1}(a)\;\sqrt{Rh}\\(b)\;\sqrt{2Rh}\\(c)\;h\sqrt{2R}\\(d)\;R\sqrt{2h}\end{array}$

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The range of coverage of an antenna of height h is given by $\sqrt{2Rh}$
Where R is radius of earth.
Hence (b) is the correct answer.
answered Mar 17, 2014 by sreemathi.v

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