JEE Main 2022PhysicsCommunication SystemHardMCQ

JEE Main 2022 — Communication System Question with Solution

JEE Main 2022 (26 Jun Shift 2)

Question

A sinusoidal wave yt=40sin10×106πt is amplitude modulated by another sinusoidal wave xt=20sin1000πt. The amplitude of minimum frequency component of modulated signal is

Choose an option

Show full solutionCorrect option: D
Correct answer
D10

Step-by-step explanation

Here, modulation index, μ=AmAc=2040=12

Modulated amplitude =μAc2

=12×402=10

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Communication System chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

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.