Verified Solution • 2025–26 Session moderate

QJEEM23Ph4682: JEE Main 2023 Physics - Class 12 JEEM23Ph4682 Solution: A message signal of frequency is used to modulate a carrier…

A message signal of frequency 3 kHz3 ~\mathrm{kHz} is used to modulate a carrier signal of frequency 1.5 MHz1.5 ~\mathrm{MHz} . The bandwidth of the amplitude modulated wave is

Multiple Choice Options

  • A 6 MHz6 ~\mathrm{MHz}
  • B 6 kHz6 ~\mathrm{kHz}
  • C 3 MHz3 ~\mathrm{MHz}
  • D 3 kHz3 ~\mathrm{kHz}

Step-by-Step Verified Solution

The bandwidth of an amplitude-modulated wave is given by 2B2B , where BB is the bandwidth of the modulating signal.

In this case, the modulating signal is a message signal of frequency 3 kHz3~\mathrm{kHz} , so the bandwidth of the amplitude modulated wave is 2(3 kHz)=6 kHz2(3~\mathrm{kHz})=6~\mathrm{kHz} .

Therefore, the correct answer is 6 kHz6~\mathrm{kHz} .

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring