A source of sound waves (wavelength A) is a distance I from a detector. Sound reaches the detector directly, andalso by reflecting off an obstacle, as shown in the figure. The obstacle is equidistant from source and detector.When the obstacle is a distance d to the right of the line of sight between source and detector, as shown, the twowaves arrive in phase.FigureDetectorSourceObstacle1 of 1 How much farther to the right must the obstacle be moved if the two waves are to be out of phase bywavelength, so destructive interference occurs? (Assume X << 1, d.)(Figure 1)Express your answer in terms of the variables A, I, and d.Ad=|Π| ΑΣΦEWA?

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How much farther to the right must the obstacle be moved if the two waves are to be out of phase by 11/10 wavelength, so destructive interference occurs? (Assume A<<< 1, d.) (Figure 1) Express your answer in terms of the variables A, I, and d. Ad= 175) ΑΣΦ BWO ? 712