Verified Solution • 2025–26 Session moderate

QJEEM15Ph975e: JEE Main 2015 Physics - Class 12 JEEM15Ph975e Solution: A signal of frequency is amplitude modulated on a carrier wave…

A signal of 55 kHzkHz frequency is amplitude modulated on a carrier wave of frequency 22 MHz.MHz. The frequencies of the resultant signal is/are :

Multiple Choice Options

  • A 20052005 kHz,2000kHz, 2000 kHzkHz and 19951995 kHzkHz
  • B 20002000 kHzkHz and 19951995 kHzkHz
  • C 22 MHzMHz only
  • D 20052005 kHzkHz and 19951995 kHzkHz

Step-by-Step Verified Solution

Amplitude modulated wave consists of three frequencies are

ωc+ωm, ω,ωc−ωm{\omega _c} + {\omega _m},\,\omega ,{\omega _c} - {\omega _m}

i.e. 20052005 KHz,KHz, 2000KHz,2000KHz, 19951995 KHzKHz

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