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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