For a good public address system the sound intensity at the farthest p – McqOptions

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1.	For a good public address system the sound intensity at the farthest point should be at least
A.	20 dB over threshold of hearing
B.	40 dB over threshold of hearing
C.	80 dB over threshold of hearing
D.	120 dB over threshold of hearing
Answer» D. 120 dB over threshold of hearing

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