(B) In frequency modulation $(FM)$,the frequency of the carrier wave is varied in accordance with the instantaneous amplitude of the modulating signal

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The frequency of the modulated wave varies as the amplitude of the modulating wave.

(B) In frequency modulation $(FM)$,the frequency of the carrier wave is varied in accordance with the instantaneous amplitude of the modulating signal (the information signal).Therefore,the frequency of the modulated wave changes in proportion to the amplitude of the modulating wave,while the amplitude of the modulated wave remains constant.

Class 12 Physics Communication Communication

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In frequency modulation,

A
The amplitude of the modulated wave varies as the frequency of the carrier wave.
B
The frequency of the modulated wave varies as the amplitude of the modulating wave.
C
The amplitude of the modulated wave varies as the amplitude of the carrier wave.
D
The frequency of the modulated wave varies as the frequency of the modulating wave.

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Communication

The modulation index for an $A.M.$ wave having maximum and minimum peak-to-peak voltages of $14\,mV$ and $6\,mV$ respectively is:

EasyJEE MAIN 2023

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$A$ modulated signal $C_m(t)$ has the form $C_m(t) = 30 \sin(300\pi t) + 10 \cos(200\pi t) - 10 \cos(400\pi t)$. The carrier frequency $f_c$,the modulating frequency $f_m$,and the modulation index $\mu$ are respectively given by:

DifficultJEE MAIN 2016

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$A$ $500\, Hz$ modulating voltage fed into an $FM$ generator produces a frequency deviation of $2.25\, kHz$. If the amplitude of the voltage is kept constant but the frequency is raised to $6\, kHz$,then the new frequency deviation will be.......$kHz$.

Medium

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In $AM$ modulation,a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be $6\,V$ and $2\,V$ respectively. The modulation index is $\dots \%$.

MediumJEE MAIN 2022

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$A$ basic communication system consists of:
$(A)$ Transmitter $(B)$ Information source $(C)$ User of information $(D)$ Channel $(E)$ Receiver
Choose the correct sequence in which these are arranged in a basic communication system.

Medium

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In frequency modulation,

Similar Questions

The modulation index for an $A.M.$ wave having maximum and minimum peak-to-peak voltages of $14\,mV$ and $6\,mV$ respectively is:

$A$ modulated signal $C_m(t)$ has the form $C_m(t) = 30 \sin(300\pi t) + 10 \cos(200\pi t) - 10 \cos(400\pi t)$. The carrier frequency $f_c$,the modulating frequency $f_m$,and the modulation index $\mu$ are respectively given by:

$A$ $500\, Hz$ modulating voltage fed into an $FM$ generator produces a frequency deviation of $2.25\, kHz$. If the amplitude of the voltage is kept constant but the frequency is raised to $6\, kHz$,then the new frequency deviation will be.......$kHz$.

In $AM$ modulation,a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be $6\,V$ and $2\,V$ respectively. The modulation index is $\dots \%$.

$A$ basic communication system consists of: $(A)$ Transmitter $(B)$ Information source $(C)$ User of information $(D)$ Channel $(E)$ Receiver Choose the correct sequence in which these are arranged in a basic communication system.

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$A$ basic communication system consists of:
$(A)$ Transmitter $(B)$ Information source $(C)$ User of information $(D)$ Channel $(E)$ Receiver
Choose the correct sequence in which these are arranged in a basic communication system.