If the movable mirror in a Michelson interferometer is moved 120 ...

[silviawilliams41]

If the movable mirror in a Michelson interferometer is moved 120 microns, how many fringes would be counted for 600 nm light?
 
  A)
 
  200
  B)
 
  720
  C)
 
  100
  D)
 
  300
  E)
 
  400

Question 2

The work done on an ideal gas system in an isothermal process is -400 J. What is the change in internal energy?
 
  A)
 
  zero
  B)
 
  -400 J
  C)
 
  400 J
  D)
 
  200 J
  E)
 
  none of the above

[nmyers]

Answer to Question 1

E

Answer to Question 2

A

[silviawilliams41]

YES! Correct, THANKS for helping me on my review

[AISCAMPING]

Thanks for the timely response, appreciate it