A coherent beam of 400 nm light is split into two paths, and then recombined. Which...
A coherent beam of 400 nm light is split into two paths, and then recombined. Which of the following differences in path length will lead to destructive interference?
A. 200 nm
B. 400 nm
C. 600 nm
D. 800 nm
Homework Answers
destructive interference occurs for the path differences one half a wavelength
400 nm *(1/2)
= 400/2
= 200 nm
option A is correct
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