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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class12  >>  Communication Systems
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Q)

An audio signal $20\sin(2\pi\times 400t)$ is used to modulating a carrier wave given by $40\sin(2\pi\times 40000t)$.The percentage modulation is

$\begin{array}{1 1}(a)\;25\%\\(b)\; 40\%\\(c)\;10\%\\(d)\;50\%\end{array}$

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