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Author Question: A laser beam (l = 694 nm) is incident on two slits 0.100 mm apart. Approximately how far apart (in ... (Read 90 times)

TVarnum

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on: Jul 28, 2018
A laser beam (l = 694 nm) is incident on two slits 0.100 mm apart. Approximately how far apart (in m) will the bright interference fringes be on the screen 5.00 m from the double slits?
 a. 3.47  10-3
  b. 3.47  10-2
  c. 3.47  10-4
  d. 3.47  10-6
  e. 3.47  10-5

Question 2

A contact lens is made of plastic with an index of refraction of 1.50 . The lens has an outer radius of curvature of +2.0 cm and an inner radius of curvature of +2.5 cm. What are the focal length and the power of the lens?


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Sammyo

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

B

Answer to Question 2

+20 cm, +5.0 diopters


TVarnum

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

strudel15

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Reply 3 on: Yesterday
Wow, this really help

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