The sound pressure (expressed in µPa) of the faintest sound that a normal healthy individual can hear is

The sound pressure (expressed in µPa) of the faintest sound that a no

1.	The sound pressure (expressed in µPa) of the faintest sound that a normal healthy individual can hear is
A.	0.2
B.	2
C.	20
D.	55
Answer» D. 55

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The sound pressure (expressed in µPa) of the faintest sound that a normal healthy individual can hear is

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