Two sets of parallel waves, with the same wavelength but different initial phase
ID: 1623213 • Letter: T
Question
Two sets of parallel waves, with the same wavelength but different initial phases, are directed at a barrier. Each wave is incident on a single tiny hole in the barrier, as shown in the diagram, where you can assume the lines represent the peaks of the waves. The two holes therefore act as sources of spherical waves, which spread out and interfere with each other. Determine what kind of interference occurs at each labeled point, and sort the points by whether they correspond to regions of completely constructive interference, completely destructive interference, or in-between.Explanation / Answer
Points A and E constructive interference
D and C destructive interference
Points B and F semi or inbetween constructive and destructive