Two light sources are said to be coherent if they A) are ...

[mspears3]

Two light sources are said to be coherent if they
 
  A)
 
  are of the same frequency.
  B)
 
  are of the same amplitude.
  C)
 
  are of the same frequency, and maintain a constant phase difference.
  D)
 
  are of the same amplitude, and maintain a constant phase difference.
  E)
 
  are of the same frequency and amplitude.

Question 2

When the first law of thermodynamics, Q = U + W, is applied to an ideal gas that is taken through an isochoric process,
 
  A)
 
  U = 0.
  B)
 
  W = 0.
  C)
 
  Q = 0.
  D)
 
  all of the above
  E)
 
  none of the above

[LegendaryAnswers]

Answer to Question 1

C

Answer to Question 2

B

[mspears3]

Thank you!

[LegendaryAnswers]

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