1058_Physics ProblemsTechnical Physics

1058_Physics ProblemsTechnical Physics - Chapter 37 P37.52...

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Chapter 37 399 P37.52 For destructive interference, the path length must differ by m λ . We may treat this problem as a double slit experiment if we remember the light undergoes a π 2 -phase shift at the mirror. The second slit is the mirror image of the source, 1.00 cm below the mirror plane. Modifying Equation 37.5, y mL d dark m m m mm == × × = 1 5 00 10 100 200 10 250 7 2 . . . ej a f . P37.53 2 15 0 30 175 2 2 .. km km af += h 15 0 227 63 162 2 2 . km km = h h FIG. P37.53 P37.54 For dark fringes, 2 nt m = and at the edge of the wedge, t = 84 500 2 nm a f . When submerged in water, 2 nt m = m = 2 1 33 42 500 500 . a fa fa f nm nm so m 11 1 3 d a r k f r i n g e s . FIG. P37.54 P37.55 From Equation 37.13,
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