Chapter 37399P37.52For destructive interference, the path length must differ by mλ. We may treat this problem as adouble slit experiment if we remember the light undergoes a π2-phase shift at the mirror. Thesecond slit is the mirror image of the source, 1.00 cm below the mirror plane. ModifyingEquation 37.5,ymLddarkm mmmm==××=−−1 5 00 10100200 1025072...ejaf.P37.53215 030 17522..kmkmaf+=h15 0227 6316222.kmkm=hhFIG. P37.53P37.54For dark fringes,2ntm=and at the edge of the wedge,t=84 5002nmaf.When submerged in water,2ntm=m=2 1 33 42 500500.afafafnmnmsom1113darkfringes.FIG. P37.54P37.55From Equation 37.13,
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