Q. Infrasonic sound has a frequency lower than
✅ Correct Answer: (C)
20 Hz
Explanation: Infrasonic Sound has a frequency less than the audible frequency range. Frequencies are less than 20 Hz. The infrasonic sounds have below the lower limit of human hearing.
Explanation by: Tina Singh
Infrasonic Sound has a frequency less than the audible frequency range. Frequencies are less than 20 Hz. The infrasonic sounds have below the lower limit of human hearing.