Question

To break tympanum and cause permanent hearing loss, the magnitude of noise pollution required is

• A. 150 dB
• B. 50 dB
• C. 4000-50000 hz
• D. 90 dB

Answer 1

The correct option is A 150 dB

The audible range for the human ear is 20 Hz-20 kHz. The noise which is measured is in the decibels. The noise which is above the level of 150 db is considered as dangerous. This level of sound can result in the tearing or breaking of the ear drum which causes permanent hearing loss. The intensity of sound is produced in the war and military regions.

Thus, the correct answer is option A.