The Intensity of a Certain Spherical Wave Is 8 $\times$ 10^-4 W/m²
C)1

question 78

Multiple Choice

The intensity of a certain spherical wave is 8.0 W/m² at a distance of 1.0 m from the source.If the medium is isotropic and nonabsorbing,the intensity 100 m from the source is

• A)8.0 W/m²
• B)6.4 \(\times\) 10^-4 W/m²
• C)1.9 \(\times\) 10^-4 W/m²
• D)8.0 \(\times\) 10^-4 W/m²
• E)1.9 \(\times\) 10^-6 W/m²

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