Verified Solution • 2025–26 Session moderate

QJEEM22Phb3e3: JEE Main 2022 Physics - Class 12 JEEM22Phb3e3 Solution: A FM Broadcast transmitter, using modulating signal of…

A FM Broadcast transmitter, using modulating signal of frequency 20 kHz has a deviation ratio of 10. The Bandwidth required for transmission is :

Multiple Choice Options

  • A 220 kHz
  • B 180 kHz
  • C 360 kHz
  • D 440 khz

Step-by-Step Verified Solution

Bandwidth of FM wave =2(Δf+fm)= 2(\Delta f + {f_m})

Δffm=10{{\Delta f} \over {{f_m}}} = 10 (Given)

Δf=fm(10)=20×10=200\Delta f = {f_m}(10) = 20 \times 10 = 200 kHz

BW=2(200+20)BW = 2(200 + 20) kHz

=440= 440 kHz

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