Light of wavelength A falls at normal incidence from air upon a plastic film ofthickness d, coated on glass. The refractive index of the plastic film is n2, and that of glass isn3, where n, > n; > nar. Find the minimum thickness of plastic to obtain a bright spot whenviewed from the top.airdn2plasticn3glass

Answered: Image /qna-images/answer/a0e8ae20-fa24-4dfd-9fcc-b82938549172.jpg

Answered: Light of wavelength A falls at normal…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Problem 4 A worker is required to identify and inspect an object 1 m away. It is illuminated by a 75-W light source 1 m to his left. The background against which the object is viewed is 1.5 m away. If the reflectances of the object and background are .6 and .5 respectively, what is the contrast? background .5 m object 1 m light 1 m eye
Physics - Unit: Applications of the Wave Nature of Light Many camera lenses are manufactured with a thin film over the glass to minimizereflection. Using diagrams and words, explain how this anti-reflective coating works.Discuss how the following variations will affect the properties of the anti-reflectivecoating.a. Changing the wavelength of lightb. Changing the angle of incidence of light
please answer both please
1- Consider a step-index optical fibre with refractive index n₁ = 1.4332 in the core and n₂=1.3223 in the cladding. a) Explain the geometrical propagation of light along the fibre. b) Calculate the critical angle at the core-cladding interface. c) We call numerical aperture (NA) to the magnitude defined by : NA=sin 0, where 0 is the maximum acceptance angle of incidence for light to be transmitted in the fibre. Show that NA = (nn) and calculate NA for this optical fibre. air 0₁ cladding n₂ cladding n₂ core n
4. Figure CQ22.4 shows light from material A with index of refraction nд entering materials B and C with indices of refraction NB and nc Rank the three indices of refraction from largest to smallest. a. nд, nB , nc b. nB, nc, NA c. nc, WA 9 nB d. nB NA, 2 nc e. nc, nB, NA Figure CQ22.4 NA ng 55.0° i 55.0° nc
The index of refraction for blue light of wavelength 434 nm in a glass sample is 1.650 and for red light of wavelength 695 nm it is 1.592. If a beam containing these two colors has an angle of incidence with the glass of 30.0°, what is the angle between the two beams inside the glass? Additional Materials Reading
A light wavelenght of 594 nm in vacuum passes through a piece of fused quartz of index of refraction n=1.458. a) Find the speed of light in the fused quartz b) What is the wavelength of this light in the fused quartz? c) What is the frequency of the light in the fused quartz?
Light is incident from medium 1 to medium 2 at Brewster's angle equal to 55.4º, and transmitted angle is 34.6°, the permeability of medium 2 is 3/4. 1- Calculate refractive indices for medium 1and medium 2. 2- Calculate the reflection coefficient for s-polarized. 3- Reflection coefficient for p- polarized.

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