what type of interference occurs at the common point?

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Two identical sound waves begin in phase, travel along different paths, and then travel in the same direction through a common point. If the path-length difference is equal to 1.0 wavelength, what type of interference occurs at the common point?

 

 fully constructive interference
 fully destructive interference
 intermediate interference
    • 10 years ago
    what type of interference occurs at the common point?
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