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Author Question: A photocathode having a work function of 2.4 eV is illuminated with monochromatic light whose photon ... (Read 73 times)

eruditmonkey@yahoo.com

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on: Jul 29, 2018
A photocathode having a work function of 2.4 eV is illuminated with monochromatic light whose photon energy is 3.4 eV. What is maximum kinetic energy of the photoelectrons produced?
 
  (c = 3.00  108 m/s, h = 6.626  10-34 J  s, 1 eV = 1.60  10-19 J)
  A) 1.6  10-19 J
  B) 3.8  10-19 J
  C) 4.4  10-19 J
  D) 4.9  10-19 J
  E) 5.4  10-19 J

Question 2

During a single period, the distance traveled by a wave is
 
  A) one-half wavelength.
  B) one wavelength.
  C) two wavelengths.
  D) more information is needed


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kjo;oj

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

A

Answer to Question 2

Answer: B


eruditmonkey@yahoo.com

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


kjo;oj

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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