1.

A 300 Hz sound wave of intensity 20 dB is transmitted by a 1500 kHz radio wave by frequency modulation. It is seen that instantaneous frequency varies between 1500.2 kHz and 1499.8 kHz, 300 times a second. If the intensity of sound wave is 100 dB.

Answer» Since, the intensity of audio wave has been increased five times, the instantaneous frequency variation is also increased five times.


Discussion

No Comment Found