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A light source shines light consisting of two wavelengths, à,
= 540 nm (green) and å,2
= 450 nm (blue), on two slits separated by
0.140 mm. The two overlapping interference patterns, one from each wavelength, are observed on a screen 1.32 m from the slits.
What is the minimum distance (in cm) from the center of the screen to a point where a bright fringe of the green light coincides
with a bright fringe of the blue light?
cm
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