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JEE Main · 2021 · 25 Jul 2021 · Shift 2 · Semiconductors

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A message single 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 _____.

Answer: 1

Solution

The modulation index of an amplitude modulated wave is the ratio of the peak amplitude of the message signal to the peak amplitude of the carrier:

The frequencies do not enter this ratio. The modulation index is .

JEE Main · 2021 · 25 Jul 2021 · Shift 2 · Integer answer

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