Q. A $1000kHz$ carrier wave is modulated by audio signal of frequency range $100$-$5000Hz$. Then the width of the channel in $kHz$ is
A) 10
B) 20
C) 30
D) 40
Explanation
(a) Band width $= 2 \times$ frequency of modulating
$= 2 \times 5000\ Hz = 10\ kH_{z}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.