Question
Question: A signal wave of frequency 12 kHz is modulated with a carrier wave of frequency 2.51 MHz. The upper ...
A signal wave of frequency 12 kHz is modulated with a carrier wave of frequency 2.51 MHz. The upper and lower side band frequencies are respectively
A
2512 kHz and 2508 kHz
B
2522 kHz and 2488 kHz
C
2502 kHz and 2498 kHz
D
2522 kHz and 2498 kHz
Answer
2522 kHz and 2498 kHz
Explanation
Solution
: Here υs=12kHz,υc=2.51MHz=2510kHz
The upper side band frequency =2510+12=2522kHz
The lower side band frequency =2510−12=2498kHz