In Fig. 35-4, assume two waves of light in air, of wavelength 681 nm, are initia
ID: 1453784 • Letter: I
Question
In Fig. 35-4, assume two waves of light in air, of wavelength 681 nm, are initially in phase. One travels through a glass layer of index of refraction n1 = 1.58 and thickness L. The other travels through an equally thick plastic layer of index of refraction n2 = 1.38. What is the smallest value L in meters should have if the waves are to end up with a phase difference of 6.42 rad?
e in Fig. 35-4, Assume Two Alexis WileyPLUS xfig35 04.gif (144x89) × - > fi Li edugen.Wileyplus.com/edugen/courses/crs1650/art/qb/qu/c35g35-04.gif :: Apps Bookmarks G GoogleGmailINBOX Hampton U Blackboard Learn CalculateMyGrade co Hampton University Home / Log In Wile U Alexis E Clark 10024 rt fig35-04.gif Show all download 11:34 AM 4/4/2016Explanation / Answer
L = (n + (6.42/6.28))681/1.58
L = n x 681/1.38
so (n + (6.42/6.28))681/1.58 = n x 681/1.38
=> n = 7.0538
=> L = 3480.9 nm = 3.481 um