Question

The frequency of audible sound is A) 20Hz to 2000Hz B) less than 20Hz C) less than 200Hz Đ) more than 20000Hz​

Answer 1

Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)