What is the power emitted by the source
The intensity at a distance of 6 m from a source that is radiating equally in all directions is 6.0 X 10-10 W/m2. What is the power emitted by the source?
a) 2.1 X 10-6 W
b) 2.7 X 10-5 W
c) 2.7 X 10-7 W
d) 2.1 X 10-8 W
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