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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Communication Systems
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Surface wave propagation is done near the surface of earth.Surface wave propagation is sutable upto

$\begin{array}{1 1}(a)\;\text{upto 100MHz}\\(b)\; \text{upto 20MHz}\\(c)\;\text{above 100MHz}\\(d)\;\text{above 20MHz}\end{array}$

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The surface wave propagation is suitable for low and medium frequency upto 20MHz only.
Hence (b) is the correct answer.
answered Mar 17, 2014 by sreemathi.v
 
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Tag:MathPhyChemBioOther
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