Concept explainers
The thickness of the thinnest film that will reflect yellow-green light and the thickness of the next-thinnest film that will also reflect yellow-green light.
Answer to Problem 37A
The thickness of the thinnest film that will reflect yellow-green light is
The thickness of the next-thinnest film that will reflect yellow-green light is
Explanation of Solution
Given:
The index of refraction of the plastic reflecting film is
The index of refraction of the glass window is
The wavelength of yellow-green light is
Formula used:
The expression for the extra distance that the second wave must travel through the thin film to create the needed interference is,
Here,
Calculation:
Consider the integer number
The thickness of the thinnest film that will reflect yellow-green light is,
The thickness of the next-thinnest film that will reflect yellow-green light is,
Conclusion:
Thus, the thickness of the thinnest film that will reflect yellow-green light is
Chapter 19 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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