Q. 124.8( 4 Votes )

The loudness of a A. 150 dB.

B. 215 dB.

C. 30 dB.

D. 80 dB.

Answer :

The standard unit to measure noise is decibels (dB).Noise below 80 dB is bearable but prolonged exposure to noise above 80dB turns into noise pollution which is painful and hazardous as it gradually leads to permanent loss of hearing power.

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