FIGURE 28-46 shows four different cases where light of wavelength l reflects from both the top and the bottom of a thin film of thickness d. The indices of refraction of the film and the media above and below it are indicated in the figure. For which of the cases will the two reflected rays undergo constructive interference if

(a) d = λ/4

(b) d = λ/2?

In figure 28-46

Transcribed Image Text:

1.6 1.4 1.5 1.4 1.5 1.5 1.6 1.6 1.6 1.4 1.4 1.5 1 4. 3. 2.