Question

humans are unable to hear the sound made by bats. give reason.

Answer 1

Bats have eyes but they are not well developed. They produce sound and detect the echoes produced by them. This activity is known as echolocation. Humans cannot hear the sound produced by them because they produce sound above 20 KHz which is inaudible to human ears as the range of human hearing is 20 Hz to 20 KHz.