Two light sources can be adjusted to emit monochromatic light of any visible wavelength. The two sources are coherent, 2.04 mm apart, and in line with an observer, so that one source is 2.04 mm farther from the observer than the other. (a) For what visible wavelengths (380 to 750 nm) will the observer see the brightest light, owing to constructive interference? (b) How would your answers to part (a) be affected if the two sources were not in line with the observer, but were still arranged so that one source is 2.04 mm farther away from the observer than the other? (c) For what visible wavelengths will there be destructive interference at the location of the observer?
Two light sources can be adjusted to emit monochromatic
light of any visible wavelength. The two sources are coherent,
2.04 mm apart, and in line with an observer, so that one source is
2.04 mm farther from the observer than the other. (a) For what visible
wavelengths (380 to 750 nm) will the observer see the brightest light,
owing to constructive interference? (b) How would your answers to
part (a) be affected if the two sources were not in line with the observer,
but were still arranged so that one source is 2.04 mm farther
away from the observer than the other? (c) For what visible wavelengths
will there be destructive interference at the location of the
observer?
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