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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. Then the modulation index and the side band frequencies respectively are

A

0.05 and `1 pm 0.010` MHz

B

0.5 and `1 pm 0.010` MHz

C

0.05 and `1 pm 0.005` MHz

D

0.5 and `1 pm 0.005` MHz

Text Solution

Verified by Experts

The correct Answer is:
A
Modulation index `= (A_(m))/(A_(c)) = (0.5)/(10) = 0.05`
Band frequencies `= 1 MHz pm 10 kHz`
`= 1 MHz pm (10)/(1000) MHz`
`= 1 pm 0.01 MHz`
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