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Two waves A and B, both of wavelength = 45.9-cm, are initially-(Answered)

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Two waves A and B, both of wavelength ? = 45.9-cm, are initially out of phase by ?. I want to bring them back in phase by placing some mirrors along the path of wave B as shown in the figure. What is the minimum spacing L required to achieve this?

PIC:?https://s.yimg.com/hd/answers/i/1a1b5768874042d293e4f341e245dd65_A.png?a=answers&mr=0&x=1463921253&s=994df16402afe8a0a3748ddff086af6d

 

Paper#9257305 | Written in 27-Jul-2016

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