A very thin oil film (n=1.25) floats on water (n=1.33). What is the thinnest film thatproduces a strong reflection for green light with a wavelength of 500 nm?

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Answered: A very thin oil film (n=1.25) floats on…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter19: Interference And Diffraction

Section19.1: Interference

Problem 6PP

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Similar questions

A very thin oil film (n=1.25) floats on water (n=1.33). What is the thinnest film (but not zero) that produces a strong reflection for green light with a wavelength of 500 nm?Express your answer in nanometers.
What is the thinnest film of MgF2 (n = 1.38) on glass that produces a strong reflection for orange light with a wavelength of 600 nm?
White light is sent downward onto a horizontal thin film that is sandwiched between two materials. The indexes of refraction are 1.80 for the top material, 1.70 for the thin film, and 1.50 for the bottom material. The film thickness is 5.00* 10-7 m. Of the visible wavelengths (400 to 700 nm) that result in fully constructive interference at an observer above the film, which is the (a) longer and (b) shorter wavelength? The materials and film are then heated so that the film thickness increases. (c) Does the light resulting in fully constructive interference shift toward longer or shorter wavelengths?
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What is the minimum thickness of a soap-bubble film (n = 1.33) that will result in constructive interference in the reflected light if the film is illuminated by light with wavelength 602 nm? (Give your answer in nm.) Now assume that the soap bubble film is on top of a glass slide (n=1.50). What is the minimum thickness for constructive interference? Give your answer in nm. What other film thicknesses will produce constructive interference for the soap bubble with air on both sides? (Give the second thinnest film in nm.) What other film thicknesses will produce constructive interference for the soap bubble with air on both sides? (Give the third thinnest film in nm.)
What is the minimum thickness of a soap-bubble film (n = 1.33) that will result in constructive interference in the reflected light if the film is illuminated by light with wavelength 602 nm? Now assume that the soap bubble film is on top of a glass slide (n=1.50). What is the minimum thickness for constructive interference? Give your answer in nm.
You wish to make an anti-reflective coating from a material with index of refraction 1.73 to put on top of glass with an index of refraction 1.4. What is the minimum thickness of the coating that will produce destructive interference for light of wavelength 420.0 nm? Answer in units of nm.
Light of wavelength 500 nm is incident perpendicularly from air on a film 10-4 cm thick and of refractive index 1.375. Part of the light enters the film and is reflected back at the second surface. How many “wavelengths” are contained along the path of this light in the film? What is the phase difference between these reflected waves as they leave the film at the first surface?
A naval engineer is testing an nonreflective coating for submarines that would help them avoid detection by producing destructive interference for sonar waves that have a frequency of 512 Hz and travel at 1280 m/s. If there is a phase change for waves reflected from both the top and bottom surfaces of the coating, what is the minimum thickness of the coating? For sonar waves let nwater=1.00 and ncoating=13.5.
A two-point source interference pattern is set up using blue light. What changes in the pattern would beobserved if red light was used?a. No changes are observed.b. The pattern disappears since red light has a very long wavelength.c. The pattern has more nodal lines.d. The pattern has fewer nodal lines.e. none of the above
A 600-nm-thick soap film (n= 1.40) in air is illuminated with white light in a direction perpendicular to the film. For how many different wavelengths in the 300 to 700 nm range is there (a) fully constructive interference and (b) fully destructive interference in the reflected light?
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A very thin oil film (n=1.25) floats on water (n=1.33). What is the thinnest film that produces a strong reflection for green light with a wavelength of 500 nm?