APFIVE Constructive Interference and Intensity
Two coherent light sources produce waves that interfere. At a point where constructive interference occurs, what happens to the intensity if the amplitude of one source is tripled while the other remains constant?
A
The intensity increases by a factor of 3
B
The intensity increases by a factor of 16
C
The intensity increases by a factor of 4
D
The intensity increases by a factor of 9
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