Sinusoidal carrier voltage of frequency `1.5 MHz` and amplitude `50V` is amplitude modulated by sinusoidal voltage of frequency `10kHz` producing `50%` modualtion. The lower and upper side-band frequencies in `kHz` are

Options

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

Answer

A

Explanation

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