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.)
n = index of refraction of soapy water = 1.36
m = order = 1
= wavelength = 640 nm = 640 x 10-9 m
t = thickness of the film = ?
using the equation
2 n t = m
inserting the values
2 (1.36) t = (1) (640 x 10-9)
t = 2.35 x 10-7 m
An extremely thin film of soapy water (n = 1.36) sits on top of a flat...
An extremely thin film of soapy water (n = 1.23) 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.
An extremely thin film of soapy water (n = 1.34) 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? (λred = 660 nm.)
A thin film of soapy water (n = 1.33) sits on top of a flat glass plate with n = 1.54. The soap film has a red color when viewed at normal incidence. What is the thickness of the film? (λred = 700 nm.)
A soap film (n = 1.33) sits on top of a plastic plate (n = 1.37). White light strikes the film nearly perpendicularly. The smallest nonzero film thickness for which the film appears bright due to constructive interference is 153 nm. What color does the film appear? Violet (420 nm) Yellow (580 nm) Red (650 nm) Blue (475 nm) Green (500 nm)
A soap film (n = 1.33) sits on top of a plastic plate (n = 1.37). White light strikes the film nearly perpendicularly. The smallest nonzero film thickness for which the film appears bright due to constructive interference is 153 nm. What color does the film appear? Violet (420 nm) Yellow (580 nm) Red (650 nm) Blue (475 nm) Green (500 nm)
A soap film (n = 1.33) sits on top of a plastic plate (n = 1.37). White light strikes the film nearly perpendicularly. The smallest nonzero film thickness for which the film appears bright due to constructive interference is 153 nm. What color does the film appear? Violet (420 nm) Yellow (580 nm) Red (650 nm) Blue (475 nm) Green (500 nm)
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 soap film (n - 1.33) sits on top of a plastic plate (n = 1.37). White light strikes the film nearly perpendicularly. The smallest nonzero film thickness for which the film appears bright due to constructive interference is 153 nm. What color does the film appear? O Violet (420 nm) Yellow (580 nm) Red (650 nm) o Blue (475 nm) Green (500 nm)
A soap film (n = 1.33) sits on top of a plastic plate (n = 1.37). White light strikes the film nearly perpendicularly. The smallest nonzero film thickness for which the film appears bright due to constructive interference is 153 nm. What color does the film appear? O Violet (420 nm) Yellow (580 nm) O Red (650 nm) Blue (475 nm) Green (500 nm)
A soap film (n = 1.33) sits on top of a plastic plate (n = 1.37). White light strikes the film nearly perpendicularly. The smallest nonzero film thickness for which the film appears bright due to constructive interference is 153 nm. What color does the film appear? Violet (420 nm) Yellow (580 nm) O Red (650 nm) Blue (475 nm) O Green (500 nm)