7
Question
dB is a standard abbreviation used for the quantitative expression of ______.
dB is a standard abbreviation used for the quantitative expression of ______.
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Solution
The correct option is A a particular pollutants
Noise pollution is a physical form of pollution that affects
the receiver directly. dB (decibel) is a standard abbreviation used for the
quantitative expression of noise. Noise or pollutant sound has a value of 80 dB
and above, it harms hearing system. The WHO has fixed 45 dB as the safe noise
level for a city.
Noise pollution is a physical form of pollution that affects the receiver directly. dB (decibel) is a standard abbreviation used for the quantitative expression of noise. Noise or pollutant sound has a value of 80 dB and above, it harms hearing system. The WHO has fixed 45 dB as the safe noise level for a city.
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