Chapter 25.6, Problem 1bTH

Recall the situation from tutorial, in which light of frequency $f=7.5\times {10}^{14}Hz$ is incident from the left side of a thin soap film $\left(n=\raisebox{1ex}{$4$}\!\left/ \!\raisebox{-1ex}{$3$}\right.\right)$ .

The cross−sectional side view diagram at right extends the ray diagram that you drew in tutorial. It shows the incident ray and several sets of rays resulting from transmission and reflection at the first (left) and second (right) boundaries. The ray that results from the second reflection from the second (right) boundary is not shown.

For the remainder of this problem, assume that the light is incident from the left side of the film at essentially normal incidence.

b. Recall from section III of the tutorial the pattern that is observed from the left side of the film.

How, if at all, would the pattern seen from the right side of the film be different from the pattern seen from the left side of the film? Use your results from part a above to help justify your answer.