Question

Maximum noise permissible during day time in residential areas is

• A. 75 dB
• B. 55 dB
• C. 65 dB
• D. 45 dB

Answer 1

Answer: (B)

55 dB

Nose pollution is the disturbance caused due to the continuous exposure of high-frequency sound. The sound waves collected by pinna directly hits the tympanic membrane of the ear. If the intensity of sound is beyond the optimum range it can disrupt the ear drum. The excessive sound can also cause disturbance in the neural system. The optimum range of sound is 20 Hz to 20,000 Hz. The maximum noise permissible during day time in residential areas is 55db.

So, the correct answer is option B.