Chapter 37403P37.63(a)Constructive interference in the reflected light requires 212tm=+FHGIKJλ. The first bright ringhas m=0 and the 55th has m=54 , so at the edge of the lenst=×=−54 5 650 10217 79..mmejµ.Now from the geometry in Figure 37.18, the distance from the center of curvature down tothe flat side of the lens isRr Rt22−=−or Rr R Rtt222−= − +Rrtt=+=×+××=−−−2252525 00 101 77 102 1 77 1070 6....m mmm(b)1111052070 6fnRR=−−FHGIKJ=∞−−FHGIKJaf.. mso f=136 m*P37.64Light reflecting from the upper interface of the air layersuffers no phase change, while light reflecting from thelower interface is reversed 180°. Then there is indeed adark fringe at the outer circumference of the lens, and a
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