White light is shone perpendicularly onto a film of unknown thickness, with index of refraction n=1.5.
Draw a ray diagram that indicates the path of red light (f = 4 x 10^14 Hz) into and out of the film as it is absorbed due to destructive interference. Why will red not be seen in the reflected light?
White light is shone perpendicularly onto a film of unknown thickness, with index of refraction n=1.5....
Monochromatic light of wavelength X-89.1um is shone at normal incidence through a thin film of thickness t resting atop a fully reflective surface. The film has an index of refraction of n film 1.5 What is the smallest thickness t (in ?m) the film could have to get constructive interference?
10.A narrow beam of white light is incident normally on the surface of a triangular silicate flint glass prism with one angle of 90. The index of refraction for violet light is 1.66 and for red light is 1.61. The angle in the prism is equal to 30° of glass. a. On the diagram below show an approximate sketch for the refracted light from the opposite face of the prism. Air B White light 780° Glass Calculate angular separation between...
In an experiment, white light is shone vertically down upon a convex spherical lens that is resting (curved side down) on a flat piece of glass. Which of the following statements correctly explain why there is there a dark ring at the centre of the resulting interference pattern? NOTE: More than one of the statements may be correct. To get full marks all correct and no incorrect statements must be selected Select all that apply: Destructive interference of two reflected...
When monochromatic light shines perpendicularly on a soap film (n = 1.33) with air on each side, the second smallest nonzero film thickness for which destructive interference of reflected light is observed is 230 nm. What is the vacuum wavelength of the light in nm?
When monochromatic light shines perpendicularly on a soap film (n = 1.33) with air on each side, the second smallest nonzero film thickness for which destructive interference of reflected light is observed is 354 nm. What is the vacuum wavelength of the light in nm?
A thin film, with a thickness of 277.1 nm and with air on both sides, is illuminated with a beam of white light. The beam is perpendicular to the film and consists of the full range of wavelengths for the visible spectrum. In the light reflected by the film, light with a wavelength of 632.3 nm undergoes fully constructive interference. At what wavelength does the reflected light undergo fully destructive interference? (Hint: You must make a reasonable assumption about the...
Thin-Film Interference Consider 3 situations in which light of wavelength 600 nm in air reflects perpendicularly from a thin film of thickness 200 nm and an index of refraction of 1.5. In each situation, the film lies between two media with different indices of refraction as shown. Both source and detector are above the film in air. Situation2 Situation.3 Situation1 n 1.4 n 1.4 n=1.5 n 1.3 10. (1.5 points) In which situation or situations will the film appear the...
A uniform film of TiO2, 1036 nm thick and having index of refraction 2.62, is spread uniformly over the surface of crown glass of refractive index 1.52. Light of wavelength 600 nm falls at normal incidence onto the film from air. You want to increase the thickness of this film so that the reflected light cancels. What is the minimum thickness of TiO2 that you must add so the reflected light cancels as desired? After you make the adjustment in...
I dont understand thin film interference. Thanks in advance n-1.00 n-1.33 n=1 50 3. A thin film of thickness t and index of refraction 1.33 coats a glass with index of refraction 1.50 as shown above. Which of the following thicknesses t will not reflect light with wavelength 640 nm in air? (A) 160 nm (8) 240 nm (C) 360 nm (D) 480 nm 4. Lenses in fine quality cameras are coated to reduce the reflection from the lenses. If...
(a) Briefly explain what is meant by the following terms: refraction, refractive index, angle of incidence, angle of refraction. [4 marks] (b) The drawing shows four different situations in which a light ray is traveling from one medium into another. In some of the cases, the refraction is not shown correctly. For cases (i), (ii), and (iii), the angle of incidence is 55°; for case (iv), the angle of incidence is 0°. Identify which cases are incorrectly drawn and determine...