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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Communication Systems
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In frequency modulation (FM) the

$\begin{array}{1 1}(a)\;\text{frequency of carrier wave is changed according to frequency of signal}\\(b)\; \text{frequency of signal wave is changed according to frequency of carrier wave}\\(c)\;\text{frequency of carrier wave changed according to intensity of signal}\\(d)\;\text{frequency of carrier wave does not change}\end{array}$

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In FM the frequency of carrier wave is changed according to intensity or amplitude of the signal.The amplitude of carrier wave is kept constant.
Hence (c) is the correct answer.
answered Mar 17, 2014 by sreemathi.v
 
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