Sinusoidal carrier voltage of frequency 1.5 MHz and amplitude 50 V is amplitude modulated by sinusoidal voltage of frequency 10 KHz producing 50% modulation . The lower and upper side-band frequencies in kHz are:
1490, 1510
Here ,fc=1.5 MHz=1500 kHz,fm=10 kHz
Therefore Low side band frequency
fc−fm=1500kHz−10kHz=1490kHz
Upper side band frequency
fc+fm=1500kHz+10kHz=1510kHz