Red light with a vacuum wavelength of 620 nm is incident from air on a piece of glass (n = 1.52) covered with a thin film (n = 1.68) What...
Question:
Red light with a vacuum wavelength of 620 nm is incident from air on a piece of glass (n = 1.52) covered with a thin film (n = 1.68) What is the minimum thickness of the film so that a constructive interference takes ...
AI Answer:
**Minimum thickness of the film for constructive interference:** $$ d = \frac{\lambda}{4n_{\text{film}}} $$ where \(\lambda = 620\,\text{nm}\) (wavelength in vacuum), \(n_{\text{film}} = 1.68\) (refractive of the film). **Final answer:** $$ d = \frac{620\,\...
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