The intensity at the threshold of hearing for the human ear at a frequency of about 1000 Hz is /0 = 1.0 x 10 12 W/m2, for which /3. the sound level, is 0 dB. The threshold of pain at the same frequency is about 120 dB, or / = 1.0 W/m2, corresponding to an increase of intensity by a factor of 1012. By what factor does the displacement amplitude. A. vary?
Step 1 of 4</p>
The intensity of 0dB sound level is 1x10-12w/m2
Faintest audible sound (threshold of hearing)
The intensity of 120dB sound level is 1W/m2
The threshold of pain
Step 2 o f4
The intensity of the wave is proportional to the square of the amplitude and frequency of the wave.