When using 529-nm light, how far is the adjustable mirror of a Michelson interferometer moved when 600 fringe shifts are counted? A fringe shift occurs when the intensity goes from bright to dark or when it goes from dark to bright
a. 1.58 × 10^-4 m
c. 9.90 × 10^-6 m
b. 7.94 × 10^-5 m
d. 3.97 × 10^-5 m
B
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