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The sound pressure level corresponding to the threshold of human hearing is standardized at:

A0 dB
B20 dB
C60 dB
D100 dB

Explanation

The threshold of human hearing corresponds to a reference sound pressure of 20 micro-Pascals, defined as 0 decibels (0 dB).

Submitted by: mcqstutor Team More Civil Engineering MCQs →

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