Q1 of 33 Page 170

What is the audible range of the average human ear?

The range of frequencies of a human ear is from 20 Hz to 20,000 Hz.


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1

An echo returned in 3 s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 m s-1?

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Why are the ceiling of concert halls curved?

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What is the range of frequencies associated with?

(a) Infrasound


(b) Ultrasound

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