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JEE Main 201815 April

Exam: JEE Main
Year: 2018
Date: 15 April
Subject: Physics
Chapter: Communication System

JEE Main 2018 · 15 April · Physics · Communication System

The number of amplitude-modulated broadcast stations that can be...

The number of amplitude-modulated broadcast stations that can be accommodated in a

300kHz

bandwidth for the highest modulating frequency

15kHz

will be:

Options

A $15$
B $20$
C $8$
D $10$

Correct answer

D. $10$

Step-by-step solution

If modulating frequency is

15kHz

then the bandwidth of one channel

= 30kHz

. A number of channels accommodate.

= \dfrac{300kHz}{30kHz} = 10

.

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