(10%) Problem 9: Light of wavelength is incident on a single slit of width W= 8.6 µm. On a screen placed a distance L = 0.44 m behind the slit the first dark fringe is located at a distance of D= 0.028 m from the central bright fringe. 50% Part (a) Find the expression for the wavelength, 2, incident on the slit. λ = W sin(atan ( ✓ Correct! ▷ A 50% Part (b) Calculate the value of λ, in nanometers.

(10%) Problem 9: Light of wavelength is incident on a single slit of width W= 8.6 µm. On a screen placed a distance L = 0.44 m behind the slit the first dark fringe is located at a distance of D= 0.028 m from the central bright fringe. 50% Part (a) Find the expression for the wavelength, 2, incident on the slit. λ = W sin(atan ( ✓ Correct! ▷ A 50% Part (b) Calculate the value of λ, in nanometers.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter35: Diffraction And Interference

Section: Chapter Questions

Problem 8PQ: Monochromatic light is incident on a pair of slits that are separated by 0.200 mm. The screen is...

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Both sides of a uniform film that has index of refraction n and thickness d are in contact with air. For normal incidence of light, an intensity minimum is observed in the reflected light at λ2 and an intensity maximum is observed at λ1, where λ1 > λ2. (a) Assuming no intensity minima are observed between λ1 and λ2, find an expression for the integer m in Equations 27.13 and 27.14 in terms of the wavelengths λ1 and λ2. (b) Assuming n = 1.40, λ1 = 500 nm, and λ2 = 370 nm, determine the best estimate for the thickness of the film.
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