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Author Question: When a grating having 5000 lines/cmis illuminated by monochromatic light, the angle between the ... (Read 67 times)

littleanan

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on: Jul 29, 2018
When a grating having 5000 lines/cmis illuminated by monochromatic light, the angle between the central maximum and the fourth order maximum is 47.2. What is the wavelength of the light?
 
  A) 138 nm
  B) 183 nm
  C) 367 nm
  D) 637 nm

Question 2

A thermodynamic engine with an efficiency of 30 performs 2500 J of work. How much thermal energy is discharged to the lower temperature reservoir?
 
  A) 5800 J
  B) 8300 J
  C) 750 J
  D) 1400 J
  E) 7100 J


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TheDev123

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

C

Answer to Question 2

A


littleanan

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Reply #2 on: Jul 29, 2018
Thanks


TheDev123

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Reply #3 on: Jul 29, 2018
Welcome :)


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