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QJEEM21Phba77: JEE Main 2021 Physics - Class 12 JEEM21Phba77 Solution: A message signal of frequency 20 kHz and peak voltage of 20…

A message signal of frequency 20 kHz and peak voltage of 20 volt is used to modulate a carrier wave of frequency 1 MHz and peak voltage of 20 volt. The modulation index will be :

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Modulation index

μ=AmAc=2020=1\mu = {{{A_m}} \over {{A_c}}} = {{20} \over {20}} = 1

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