A carrier wave of frequency 1.5 MHz and amplitude 50 V is modulated by a sinusoidal wave of frequency 10KHz producing 50% amplitude modulation. Calculate the amplitude of the AM wave and frequencies of the side bands produced.

Options

A. 1490, 1510
B. 1510, 1490
C. `(1)/(1490),(1)/(1510)`
D. `(1)/(1510),(1)/(1490)`

Answer

A

Explanation

Here, `f_(c)=1.5 MHz=1500 kHz,f_(m)=10 kHz`
`:.` Lower side band frequency
`=f_(c)=f_(m)=1500 kHz-10kHz=1490 kHz`
Upper side band frequency
`=f_(c)+f_(m)=1500kHz +10kHz =1510kHz`.