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JEE Main 202124 FebruaryMorning Shift

Exam: JEE Main
Year: 2021
Date: 24 February
Shift: Morning Shift
Subject: Physics
Chapter: Communication System

JEE Main 2021 · 24 February · Morning Shift · Physics · Communication System

An audio signal v _ m = 20 2π(1500t) amplitude modulates a carrier...

An audio signal

{v}_{m} = 20\sin 2\pi\left(1500t\right)

amplitude modulates a carrier

{v}_{c} = 80\sin 2\pi\left(100, 000t\right)

. The value of percent modulation is

Correct answer

0

Step-by-step solution

$%$ modulation $= \dfrac{Am}{Ac} \times 100$

$%$ modulation $= \dfrac{20}{80} \times 100$

$%$ modulation $= 25 %$

$= 25$

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