JEE Main 2022PhysicsCommunication SystemEasyMCQ

JEE Main 2022 — Communication System Question with Solution

JEE Main 2022 (27 Jul Shift 2)

Question

A square wave of the modulating signal is shown in the figure. The carrier wave is given by Ct=5sin8πtVolt. The modulation index is

Choose an option

Show full solutionCorrect option: A
Correct answer
A0.2

Step-by-step explanation

Given here, Ct=5sin8πt volts.

From the carrier wave equation we have, AC=5 and from the graph we have, Am=1.

Modulation Index μ=AmAC=15=0.2

Where, 

Am= amplitude of modulating signal

Ac= amplitude of carrier wave

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About this question

This is a previous-year question from JEE Main 2022, covering the Communication System chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.