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JEE Main 31-Aug-2021 Shift 2 Solved Paper
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© examsnet.com
Question : 21
Total: 90
Section B : Numerical Type Questions
A
bandwidth of
6
MHz
is available for
AM
transmission. If the maximum audio signal frequency used for modulating the carrier wave is not to exceed
6
kHz
. The number of stations that can be broadcasted within this band simultaneously without interfering with each other will be ............ .
[31 Aug 2021 Shift 2]
Your Answer:
Validate
Solution:
Given, maximum frequency of audio signal = 6 kHz
Available bandwidth = 6 MHz
Bandwidth of each station
=2 × Maximum frequency of audio signal
=
2
×
6
×
10
3
Hz
=
12
×
10
3
Hz
Number of stations that can be broadcasted within the bandwidth of
6
MHz
=
6
×
10
6
12
×
10
3
=
500
Thus, the correct answer is 500.
© examsnet.com
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