Question

A message signal of frequency 10 kHz and peak voltage of 10 V is used to modulate a carrier of frequency 1 MHz and peak voltage of 20 V. The frequency of the side bands produced is

• A. 1000 kHz, 990 kHz
• B. 1010 kHz, 990 kHz
• C. 990 kHz, 1000 kHz
• D. 1010 kHz, 1000 kHz

Answer 1

Answer: (B)

1010 kHz, 990 kHz

Answer 2

: The side bands produced are at $(100 + 10)$ KHz $= 1010KHz$ and $(1000 - 10)KHz = 990KHz$