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GO In Figure 35-50, two isotropic point sources S1 and S2 emit light in phase at wavelength λ and at the same amplitude. The sources are separated by distance d = 6.00 λ on an x axis. A viewing screen is at distance D = 20.0 λ from S2 and parallel to the y axis. The figure shows two rays reaching point P on the screen, at height yP. (a) At what value of yP do the rays have the minimum possible phase difference? (b) What multiple of λ gives that minimum phase difference? (c) At what value of yP do the rays have the maximum possible phase difference? What multiple of λ gives (d) that maximum phase difference and (e) the phase difference when yP = d? (f) When yP = d, is the resulting intensity at point P maximum, minimum, intermediate but closer to maximum, or intermediate but closer to minimum?
Figure 35-50 Problem 84.
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