What should be the minimum time gap between two sounds to be perceptible by the human ear?
1 s
0.1 s
0.01 s
0.001 s
The minimum time gap between two sounds to be perceptible by the human ear is 0.1 s.
The speed of sound in air is 330 m/s and the human brain can only distinguish sounds 0.1 s apart. A person is standing beside a source of the sound. What should be the minimum distance between the source and the reflecting surface for the echo to be heard by him?