Figure 35-40 shows two isotropic point sources of light

Chapter , Problem 28

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Figure 35-40 shows two isotropic point sources of light (S1 and S2) that emit in phase at wavelength 400 nm and at the same amplitude. A detection point P is shown on an x axis that extends through source S1. The phase difference f between the light arriving at point P from the two sources is to be measured as P is moved along the x axis from x ! 0 out to x ! '1.The results out to xs ! 10 ( 10&7 m are given in Fig. 35-41. On the way out to Figure 35-36 13. n2 n1 L2 L1 d x S1 S2 Figure 35- 37 17 and 22. D A B rA rB Figure 35-38 23. Figure 35-39 24. x 0 Screen S1 S2 P D d d Figure 35-40 25 and 28. y x S 1 S 2 P Figure 35-41 28. 6 4 2 0 x (107 m) xs (rad) '1,what is the greatest value of x at which the light arriving at P from S1 is exactly out of phase with the light arriving at P from S2