Question: Repeat Problem 25 assuming that n 1 < n 2 < n 3 . Data From Problem 25 A thin film is viewed both in
Repeat Problem 25 assuming that n1 2 3.
Data From Problem 25
A thin film is viewed both in reflected and transmitted light at normal incidence. The figure shows the strongest two rays for each. Show that if rays 1 and 2 interfere constructively, then rays 3 and 4 must interfere destructively, and if rays 1 and 2 interfere destructively, then rays 3 and 4 interfere constructively. Assume that n2 is the largest of the three indices of refraction.

3- 4 13 12 n Incident ray 1 $2
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If rays 1 and 2 interfere constructively it means that their difference in optical path length is eq... View full answer
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