interference of two wave, explain it by mathematical method? And also explain the intensity is 4-times .
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Constructive interference occurs when the crests of one wave overlap the crests of the other wave, causing an increase in wave amplitude. Destructive interference occurs when the crests of one wave overlap the troughs of the other wave, causing a decrease in wave amplitude.
Superposition is the combination of two waves at the same location. Constructive interference occurs when two identical waves are superimposed in phase. ... A standing wave is one in which two waves superimpose to produce a wave that varies in amplitude but does not propagate.
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