8. (a) State the S.I. unit of frequency and the characteristics of sound that
depends on its frequency.
(b) Write the frequency range of sounds that are audible to the human ear.
(c) Name another characteristics of sound that determines whether it is
audible or not. Name the property of sound on which this characteristic
depends.
1+1+1=3
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Answer:
a Hertz is the SI unit of sound
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