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In an amplitude modulator circuit, the c...

In an amplitude modulator circuit, the carrier wave is given by, `C(t)=4sin (20000pit)` while modulating signal is given by, `m(t)=2 sin (2000pit)`. . The values of modulation index and lower side band frequency are:

A

0.3 and 9 kHz

B

0.5 and 9 kHz

C

0.5 and 10 kHz

D

0.4 and 10 kHz

Text Solution

Verified by Experts

The correct Answer is:
B
`M.I =A_(m)/A_( c) = 2/4 = 0.5`
`F_( C) - F_(m) = Deltaf = 10000 - 1000 = 9000 Hz`
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