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Author Question: A lens is made with focal length -40 cm using a material with index of refraction 1.50. A second ... (Read 234 times)

jparksx

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on: Jul 29, 2018
A lens is made with focal length -40 cm using a material with index of refraction 1.50. A second lens is made with the same geometry as the first but using a higher index material, the index being 2.00.
 
  What is the focal length of the second lens? A)
 
  -40 cm
  B)
 
  -80 cm
  C)
 
  -53 cm
  D)
 
  -20 cm
  E)
 
  -30 cm

Question 2

A photon has an energy of 6.60 eV. To what wavelength does this energy correspond?
 
  A)
 
  100 nm
  B)
 
  118 nm
  C)
 
  151 nm
  D)
 
  173 nm
  E)
 
  189 nm


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jazzlynnnnn

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Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

E


jparksx

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Reply 2 on: Jul 29, 2018
Gracias!

mcabuhat

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Reply 3 on: Yesterday
Wow, this really help

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