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Q. The length of antenna to transmit waves of $ 1\,MHz$ will be

J & K CETJ & K CET 2015

Solution:

Length of the antenna required to transmit the full wave is given by
$L=\frac{c}{v}=\frac{3\times 10^{8}}{1\times 10^{6}}$
$=3\times 10^{2}=300\,m $