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A carrier frequency of 1 MHz and peak va...

A carrier frequency of 1 MHz and peak value of 10 V is amplitude modulated with a signal frequency of 10 KHz with peak value of 0.5 V. What are the values of the modulation index and the side band frequencies ?

A

`0.05 and 1pm0.010` MHz

B

`0.5 and 1pm0.010` MHz

C

`0.05 and 1pm0.005` MHz

D

`0.5 and 1 pm 0.005` MHz

Text Solution

Verified by Experts

The correct Answer is:
A
`f_c` = 1 MHz = 1000 KHz, `A_c` = 10V
`f_m =` 10 KHz , `A_m` = 0.5V
Modulation index `(mu) = (A_m)/(A_c) =(0.5)/10 = 0.05`
Side band `= f_c+ f_m = 1pm0.010` MHz.
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