The intensity of sound from a point source is 1.0 x 10–8 W/m2 at a distance of 5.0 from the source.
What will be the intensity at a distance of 25 m from the source?

Question

The intensity of sound from a point source is 1.0 x 10–8 W/m2 at a distance of 5.0 from the source. What will be the intensity at a distance of 25 m from the source?

Arun · Answer

sound intensity is inversely proportional to r 2 . hence S1/ S2 = (r 2 / r 1 ) 2 1 * 10 -8 / S2 = (25 / 5) 2 S2 = 1* 10 –8 / 25 S 2 = 4 * 10 –10 W/m 2

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The intensity of sound from a point source is 1.0 x 10–8 W/m2 at a distance of 5.0 from the source. What will be the intensity at a distance of 25 m from the source?

The intensity of sound from a point source is 1.0 x 10–8 W/m2 at a distance of 5.0 from the source.
What will be the intensity at a distance of 25 m from the source?

1 Answers

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The intensity of sound from a point source is 1.0 x 10–8 W/m2 at a distance of 5.0 from the source. What will be the intensity at a distance of 25 m from the source?

The intensity of sound from a point source is 1.0 x 10–8 W/m2 at a distance of 5.0 from the source.What will be the intensity at a distance of 25 m from the source?

1 Answers

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The intensity of sound from a point source is 1.0 x 10–8 W/m2 at a distance of 5.0 from the source.
What will be the intensity at a distance of 25 m from the source?