Repeat Problem 25 assuming that n₁ < n₂ < n₃.

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.

Transcribed Image Text:

3- 4 13 12₂ n Incident ray 1 $2