If a soap bubble is 120 nm thick, what wavelength is most strongly reflected at the center of the outer surface when illuminated normally by white light? Assume that the index refraction of air is na = 1 (the actual value is 1.0003) and the index refraction of soap is ns = 1.35.

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### Problem Description

A soap bubble is 120 nm thick. Determine the wavelength most strongly reflected at the center of the outer surface when it is illuminated normally by white light. 

#### Given:
- **Index of refraction of air (\(n_a\))**: \(1\) (actual value is \(1.0003\))
- **Index of refraction of soap (\(n_s\))**: \(1.35\)
Transcribed Image Text:### Problem Description A soap bubble is 120 nm thick. Determine the wavelength most strongly reflected at the center of the outer surface when it is illuminated normally by white light. #### Given: - **Index of refraction of air (\(n_a\))**: \(1\) (actual value is \(1.0003\)) - **Index of refraction of soap (\(n_s\))**: \(1.35\)
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