Question

Noise pollution is created if noise is in excess to:

• A. 40 - 65 dB
• B. 50 - 60 dB
• C. 70 - 75 dB
• D. 80 - 99 dB

Answer 1

The correct option is D

80 - 99 dB

The correct option is D.

Explanation for the correct option:

Option D:

1. The audible range for hearing the sound by the human ear is 20 Hz-20 kHz.
2. Noise pollution is the condition when the frequency of the sound results in disturbance to the living forms.
3. Sound which is above the level of 80 dB is considered the source of noise pollution.
4. At 85 dB noise, there is damage to the ear and there is hearing loss at about 120 dB.

Final answer: Noise pollution is created if noise is in excess to 80 - 99 dB.