A soap film supported by a vertical loop has settled and is thinner at the top than at the bottom. Light of frequency f = 7.5 x 10¹4 Hz is incident on the film (n =) at essentially normal incidence.
A soap film supported by a vertical loop has settled and is thinner at the top than at the bottom. Light of frequency f = 7.5 x 10¹4 Hz is incident on the film (n =) at essentially normal incidence.
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Please explain in detail each question as instructed in problem
Transcribed Image Text:A soap film supported by a vertical loop has settled and is thinner at the top than at the bottom. Light of frequency f = 7.5 x 10¹4 Hz is incident on the film (n =) at essentially normal incidence.
Cross-sectional side view (not to scale)
Observer C
Observer A
Observer B
Air
Air
Thinnest part
of soap film
Thickest part
of soap film
Observer C is looking at the thinnest part of the film, where the film is extremely thin. To this observer, would the film appear bright or dark? Explain your reasoning.
The thickness of the film is 1650 nm at the bottom of the film, where the film is the thickest. Would this part of the film appear bright, dark, or in between? Explain.
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