JEE Main 2015PhysicsCommunication SystemEasyMCQ

JEE Main 2015 — Communication System Question with Solution

JEE Main 2015 (04 Apr)

Question

A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal is/are:

Choose an option

Show full solutionCorrect option: D
Correct answer
D2005 kHz, 2000 kHz and 1995 kHz

Step-by-step explanation

Frequency of signal wave =5 kHz=f. Carrier wave frequency =2MHz

=2000kHz=fc. The resultant signal maximum frequency=f+fc

= 5 + 2 0 0 0 kHz

= 2 0 0 5 kHz

Resultant signal minimum frequency

=fc-f

= 2 0 0 0 - 5 kHz

= 1995 kHz

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About this question

This is a previous-year question from JEE Main 2015, 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.