What is the frequency range of amplifier used for a phonocardiograph? – McqOptions

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1.	What is the frequency range of amplifier used for a phonocardiograph?
A.	less than 0 Hz
B.	0 to 20 Hz
C.	20 to 2000 Hz
D.	above 2000 Hz
Answer» D. above 2000 Hz

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