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Author Question: A possible means for making an airplane radar-invisible is to coat the plane with an antireflective ... (Read 71 times)

Deast7027

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on: Jul 28, 2018
A possible means for making an airplane radar-invisible is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 3.84 cm, and the index of refraction of the polymer is n = 1.6, how thick would the coating be if a 180 phase change occurs at both surfaces?
 a. 24 mm
  c. 32 mm
  b. 7.5 mm
  d. 6.0 mm

Question 2

A puddle of water (n = 1.33) is covered with a very thin layer of oil (n = 1.20). How thick is the oil in the region that strongly reflects light with a wavelength of 497 nm?
 a. 207 nm
  c. 458 nm
  b. 550 nm
  d. 229 nm


sabina576

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Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


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Deast7027

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Reply #2 on: Jul 28, 2018
TY


sabina576

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Reply #3 on: Jul 28, 2018
You're welcome


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