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A Monochromatic Point Like Light Source Emits 1

Question 40

Multiple Choice

A monochromatic point like light source emits 1.50 W of electromagnetic power uniformly in all directions.The Poynting vector in a point situated at 0.750 m from the source is


A) 0.212 W/m2.
B) 0.119 W/m2.
C) 0.367 W/m2.
D) 0.0578 W/m2.
E) 0.437 W/m2.

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