What is the audible range of the average human ear?
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20 Hz to 20,000 Hz.
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An echo is heard in 3 s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 ms-1?
Why are the ceilings of concert halls curved?
What is the range of frequencies associated with
(a) Infrasound?
(b) Ultrasound?
What is sound, and how is it produced?