Saturday, March 10, 2012

What is the intensity of EM radiation in this region?

Two incoherent EM waves of intensities 9 and 13 travel in the same direction in the same region of space. What is the intensity of EM radiation in this region?



I tried 44 and then 0.37 and they were wrong, please help.



*I give 10 points to best answers so try answering my unresolved questions!What is the intensity of EM radiation in this region?
Because the waves are incoherent, the intensities simply add (being incoherent, they cannot interfere), so the time-averaged intensity of the radiation in the region of interest would be 22 ( = 9+13).

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