What Is The Maximum Possible Sound Level In dB of Sound Waves In Air? Given That Density Of Air = 1.3 Kg/m3, v = 332 M/s And Atmospheric Pressure  

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What is the maximum possible sound level in dB of sound waves in air? Given that density of air = 1.3 kg/m3v = 332 m/s and atmospheric pressure  


Correct option is

190 dB


For maximum possible sound intensity, pressure amplitude of wave will be equal to atmospheric pressure, i.e.,




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(a) Speed of sound in air is 332 m/s at NTP. What will be the speed of sound in hydrogen at NTP if the density of hydrogen at NTP is (1/16) that of air? [Assume ρairH â‰ƒ 1.]  

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The faintest sound the human ear can detect at a frequency of 1 kHz (for which the ear is most sensitive) corresponds to an intensity of about 10–12W/m2 (the so called threshold of hearing). Determine the pressure amplitude and maximum displacement associated with this sound assuming the density of air = 1.3 kg/m3 and velocity of sound in air = 332m/s



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(b) How much more intense is an 80 dB sound than a 20 dB whisper?