A sinusoidal carrier voltage of frequency 1.5 MHz and amplitude 50V 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, f_c = 1.5 MHz = 1500 kHz,

   f_m = 10 kHz,

 ∴ Low side band frequency= f_c – f_m­ = 1500 kHz – 10 kHz= 1490 kHz

  Uper sideband frequency = 1500 kHz + 10 kHz= 1510 kHz