Q.

SI unit of Intensity of Sound waves is :

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a

W/m

b

 watt /m2

c

J/s

d

Kwh

answer is A.

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Detailed Solution

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In the field of acoustics, the SI unit of sound is a measure of the intensity of sound waves. Sound intensity refers to the amount of energy carried by sound waves per unit area. It is defined as the power transmitted through a unit area perpendicular to the direction of sound wave propagation.

The SI unit of sound intensity is expressed in watt per square meter (W/m2). This unit quantifies the power (in watts) passing through a one square meter area perpendicular to the sound wave's direction.

To elaborate, when we discuss sound waves, their energy is transferred through the medium (air, water, etc.) in the form of vibrations. The SI unit of sound intensity helps us measure how much energy is delivered to a surface over time, which is crucial for understanding sound pressure levels and other acoustical phenomena.

In summary, the SI unit of sound intensity is the watt per square meter (W/m2), a unit that plays a central role in acoustics and sound wave analysis.

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