JEE Main 2019PhysicsCommunication SystemMediumMCQ

JEE Main 2019Communication System Question with Solution

JEE Main 2019 (10 Jan Shift 2)

Question

The modulation frequency of an AM radio station is 250kHz, which is 10% of the carrier wave. If another AM station approaches you for license what broadcast frequency will you allot?

Choose an option

Show full solutionCorrect option: B
Correct answer
B2000kHz

Step-by-step explanation

Carrier wave frequency =250×10=2500kHz

Frequency used 2500±250kΩ=2250kHz to 2750kHz

The allotted frequency showed be such that f±250 kHz should not overlap with previous one. Hence possible frequency =2000kHz

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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.