Two light sources can be adjusted to emit monochromatic light of any visible wav

Question

Two light sources can be adjusted to emit monochromatic light of any visible wavelength. The two sources are coherant 2.04 um apart, and in line with an observer, so that one source is 2.04 um farther from the observer than the other. A. For what visible wavelengths (400 to 700 nm ) will the observer see the brightest light, owing to constructive interference? Answer: 408 nm, 510 nm, 680 nm B. What would your answers to part (a) be if the two sources were not in line with the observer, but were still arranged so that one source is 2.04 um farther away from the observer than the other Answer: Same as A C.For what visible wavelengths will there be destructive interference at the location of the observer? Answer: Cannot figure this one out (in nm)

Explanation / Answer

constructive interference will occur if the distance is equal to n *lambda lambda=2040/n n=5,4,3 it doesnt depend on the direction destructive interefernce lambda=2040/n, n=4.5,3.5 =453,583

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