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Questions  >>  CBSE XII  >>  Physics  >>  Communication systems
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A TV transmission tower has a height of $240 \;m$ signal broad cast from this will be received by LOS Communication at a distance of (assume the radius of earth to be $6.4 \times 10^6 \;m)$

$\begin{array}{1 1} 100\;km \\ 24\;km\\ 55\;km \\ 50\;km \end{array} $

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