Question

Wave Optics – Thin Films A thin film 4.0X10-5cm thick interfaces with air (n=1) on each...

Wave Optics – Thin Films

A thin film 4.0X10-5cm thick interfaces with air (n=1) on each its front and back surfaces and is illuminated by white light normal to its front surface. Its index of refraction is 1.5. What wavelengths within the visible spectrum will be intensified in the reflected beam? (visible light is taken to be wavelengths between 390 to 700 nm) Follow the solution outline below:

  1. Sketch the situation and label the index of refraction on each side of each interface (you will be graded on this)
  2. Given the phase of the incoming wave and knowing that the transmitted wave does not experience a phase change, what is the phase change of the reflected wave at each interface of the thin film?
    • First interface: (identify) change, same
    • Second interface: (identify) change, same
    • How many phase changes total: (identify) 0 or 2, 1
  1. Greater intensity of the reflected beam corresponds to which type of interference?
  2. Choose the thin film equation for the type of interference and number of phase changes of this situation and solve for the wavelength (s) in the visible range. (may need to evaluate multiple m’s)
Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Red light with wavelength 600[nm] is incident from air (n = 1.0) onto a thin film...
Red light with wavelength 600[nm] is incident from air (n = 1.0) onto a thin film of index n = 1.5. The thin film coats a thick slab of material which has index n = 2.0.   1: For what minimum film thickness would the thin film produce no significant overall reflection due to destructive interference? 2: Did the reflections off of those two interfaces have the same phase change (both 0º or both 180º)? Or did the reflections off of...
A student shines a variable light source directly onto a thin film of oil that is...
A student shines a variable light source directly onto a thin film of oil that is on the surface of a piece of plastic. The oil has an index of refraction of 1.62 while the plastic has an index of refraction of 1.44. The student adjusts the light source until the first bright reflection occurs, which they note occurs when the wavelength is 560 nm. Q1. At which if any does the light undergo a 180 phase change on reflection?...
A thin film of soap solution (n = 1.33) has air on either side and is...
A thin film of soap solution (n = 1.33) has air on either side and is illuminated normally with white light. Interference minima are visible in the reflected light only at wavelengths of 320, 360, and 720 nm in air. 1) What is the minimum thickness of the film? (Express your answer to two significant figures.)
Light of wavelength 475 nm is incident normally on a film of water 10-4 cm thick....
Light of wavelength 475 nm is incident normally on a film of water 10-4 cm thick. The index of refraction of water is 1.33. a. What is the wavelength of the light in the water? b. How many wavelengths are contained in the distance 2t, where t is the thickness of the film? (Do not round your answer to a whole number.) c. What is the phase difference between the wave reflected from the top of the air-water interface and...
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 455 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? (Enter your answers from smallest to largest. The visible region extends from 380 nm - 750 nm.) smallest ________ nm largest __________ nm
A film with an index of refraction n= 2.63 floats on top of water (n=1.33). A...
A film with an index of refraction n= 2.63 floats on top of water (n=1.33). A light beam with wavelength 700 nmnm is reflected from the top and the bottom of the film. What are the phase changes from the top and bottom reflection, respectively? no phase change, 466 nmnm phase change no phase change, no phase change 350 nmnm  phase change, 466 nmnm phase change 350 nmnm  phase change, no phase change
1. Light traveling in air (index of refraction 1.00) falls onto a thin plastic film (index...
1. Light traveling in air (index of refraction 1.00) falls onto a thin plastic film (index of refraction 1.30) of unknown thickness that covers glass (index of refraction 1.50). What minimum non-zero thickness is needed such that wavelengths of 650 nm in air are bright in the reflection? 2. You observe two point sources of light that are spaced 10 cm apart which are each emitting light of wavelength of 590 nm. If the diameter of your pupil is 2...
1) 2 point charges are separated by a distance of 8 cm. The left charge is...
1) 2 point charges are separated by a distance of 8 cm. The left charge is 48 mC and the right charge is -16mC. Using a full sheet of paper: draw the 2 charges separated by 8cm, centered in the sheet. (if you are missing a ruler estimate 8cm as ⅓ a paper sheet length). [6] a) Draw field lines to indicate the electric fields for this distribution. [4] b) Draw 3 equipotential surfaces, 1 each, that pass: -Through the...
1) Describe an example of each of the following that may be found of your kitchen:...
1) Describe an example of each of the following that may be found of your kitchen: Explain how your choice falls into this category, and if there is a chemical name or symbol for it, provide that as well. Provide a photo of your example with your ID card in it. a) a compound b) a heterogeneous mixture c) an element (symbol) Moving to the Caves… Lechuguilla Caves specifically. Check out this picture of crystals of gypsum left behind in...
Using the model proposed by Lafley and Charan, analyze how Apigee was able to drive innovation....
Using the model proposed by Lafley and Charan, analyze how Apigee was able to drive innovation. case:    W17400 APIGEE: PEOPLE MANAGEMENT PRACTICES AND THE CHALLENGE OF GROWTH Ranjeet Nambudiri, S. Ramnarayan, and Catherine Xavier wrote this case solely to provide material for class discussion. The authors do not intend to illustrate either effective or ineffective handling of a managerial situation. The authors may have disguised certain names and other identifying information to protect confidentiality. This publication may not be...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT