A thin film of oil (n = 1.13) is located on a smooth, wet pavement. When...
A thin film of oil (n = 1.13) is located on a smooth,
wet pavement. When viewed perpendicular to the pavement, the film
appears to be predominantly red (640 nm) and has no component of
wavelength 569 nm. How thick is the oil film?
nm
Homework Answers
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A thin film of oil (n = 1.13) is located on a smooth,
wet pavement. When...
There is a film of oil (n=1.52) on a wet pavement (n=1.33). the film has a...
There is a film of oil (n=1.52) on a wet pavement (n=1.33). the film has a minimum non-zero thickness such that it is dark when viewed in red light (wavelength = 660 nm in vacuum). Assuming that the visible light spectrum extends from 380nm to 750nm, what wavelength in vacuum will you see when you look at the film in broad daylight?
Water (n = 1.33) in a shallow pan is covered with a thin film of oil...
Water (n = 1.33) in a shallow pan is covered with a thin film of oil that is 450 nm thick and has an index of refraction of 1.45. What visible wavelengths will not be present in the reflected light when the pan is illuminated with white light and viewed from straight above?
Q1 Thin Film Engine oil (n = 1.50) has spilled onto a smooth flat lake (n...
Q1 Thin Film Engine oil (n = 1.50) has spilled onto a smooth flat lake (n = 1.33), spreading into a thin surface film of thickness, d. Sunlight illuminates the lake, reflecting from an incident angle of 45° to your eye. Your eye detects sunlight in the 400 to 740 nm wavelength range. (a) [3 mark] State an equation for wavelength, 2m, that satisfies the bright intensity fringe condition at the 45° viewing angle. (b) [2 marks] Determine the minimum...
An extremely thin film of soapy water (n = 1.36) sits on top of a flat...
An extremely thin film of soapy water (n = 1.36) sits on top of a flat glass plate with n = 1.11. The soap film has a red color when viewed at normal incidence. What is the thickness of the film in meters? (λred = 640 nm.)
An extremely thin film of soapy water (n = 1.23) sits on top of a flat...
An extremely thin film of soapy water (n = 1.23) sits on top of a flat glass plate with n = 1.14. The soap film has a red color when viewed at normal incidence. What is the thickness of the film? (?red = 640 nm.) My answer was 2.6016e-7 meters, which was wrong.
Thin Film Interference Problems 1. Oil (n=1.25) floats on water. What is the minimum thickness of...
Thin Film Interference Problems 1. Oil (n=1.25) floats on water. What is the minimum thickness of oil in a region where it appears green ( = 525 nm)? (Ans: 210 nm) 2. A 500 nm thick layer of oil (n = 1.25) floats on water. What wavelengths of light in the visible range (400 nm to 700 nm) are maximally reflected? (Ans: 417 nm, 625 nm) 3. Athin film of acetone (n = 1.25) coats a thick glass plate (n...
A thin film of soap with n = 1.36 hanging in the air reflects dominantly red...
A thin film of soap with n = 1.36 hanging in the air reflects dominantly red light with λ = 695 nm. What is the minimum thickness of the film? 1.278×102 nm Now this film is on a sheet of glass, with n = 1.54. What is the wavelength of the light in air that will now be predominantly reflected?
A thin film of soap with n = 1.34 hanging in the air reflects dominantly red...
A thin film of soap with n = 1.34 hanging in the air reflects dominantly red light with λ = 648 nm. What is the minimum thickness of the film? Now this film is on a sheet of glass, with n = 1.49. What is the wavelength of the light in air that will now be predominantly reflected?
A thin layer of oil (n = 1.20) floats on the surface of a puddle of...
A thin layer of oil (n = 1.20) floats on the surface of a puddle of water (n = 1.33). One part of the oil film appears bright greenish blue, i.e. it strongly reflects light with a wavelength in vacuum of 497 nm. What is the smallest nonzero film thickness of the oil film in this region? 207 nm 550 nm 458 nm 229 nm 357 nm
A very thin oil film (n=1.25) floats on water (n=1.33). What is the thinnest film that...
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?
Q1 Thin Film Engine oil (n = 1.50) has spilled onto a smooth flat lake (n = 1.33), spreading into a thin surface film of thickness, d. Sunlight illuminates the lake, reflecting from an incident angle of 45° to your eye. Your eye detects sunlight in the 400 to 740 nm wavelength range. (a) [3 mark] State an equation for wavelength, 2m, that satisfies the bright intensity fringe condition at the 45° viewing angle. (b) [2 marks] Determine the minimum...
Thin Film Interference Problems 1. Oil (n=1.25) floats on water. What is the minimum thickness of oil in a region where it appears green ( = 525 nm)? (Ans: 210 nm) 2. A 500 nm thick layer of oil (n = 1.25) floats on water. What wavelengths of light in the visible range (400 nm to 700 nm) are maximally reflected? (Ans: 417 nm, 625 nm) 3. Athin film of acetone (n = 1.25) coats a thick glass plate (n...
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