JEE Main 2019PhysicsCommunication SystemMediumMCQ

JEE Main 2019 — Communication System Question with Solution

JEE Main 2019 (09 Apr Shift 1)

Question

A signal Acosωt is transmitted using ν0sinω0t as carrier wave. The correct amplitude modulated (AM) signal is:

Choose an option

Show full solutionCorrect option: D
Correct answer
Dν0sinω0t+A2sin⁡ω0-ωt+A2sin⁡ω0+ωt

Step-by-step explanation

ym=A cosωt
yc=V0 sinω0t
Modulated signal =V0+A cosωtsinω0t
=V0sinω0t+Acosωt sinω0t
=V0sinω0t+A2sinω0-ωt+A2sinω0+ωt

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About this question

This is a previous-year question from JEE Main 2019, 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.