Question

Modulation is the process of superposing
A. low frequency audio signal on high frequency radio waves.
B. low frequency radio signals on low frequency audio wave.
C. high frequency radio signal on low frequency audo signal.
D. high frequency audio signal on low frequency radio waves.

Answer 1

Correct Answer - A
Modulation is a process of superposing a low frequency audio signals (called modulating signal) on a high frequency radio wave (called carrier wave).