Science, asked by sandeepmaheswari, 1 year ago

what is meant by intensity of sound? how is it different from loudness? determine the wavelength of an ultrasonic wave of frequency 4.2MHz.the speed of ultrasonic wave is 1.7kms^-1

Answers

Answered by JAMES1111
0
Sound intensity also known as acoustic intensity is defined as the power carried by sound waves per unit area in a direction perpendicular to that area. The  SI unit of intensity, which includes sound intensity, is the WATT  per square meter (W/m2). One application is the noise measurement of sound intensity in the air at a listener's location as a sound energy quantity.
Answered by LostDimension
1
Intensity of sound - It is defined as the sound power per unit area

The SI unit of sound intensity is the watt per square metre (W/m 2).

The sound intensity must be factored by the ear's sensitivity to the particular frequencies contained in the sound.  while Sound loudness is a subjective term describing the strength of the ear's perception .

wavelengthλ = speed V / frequency n

= 1700 / 4.2 x10^6 = 4.05 x10^-4 m.


sandeepmaheswari: this correct or not
JAMES1111: absolutely correct
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