Question

In the double-slit experiment, Michelle strongly believes the slit separation printed by factory is wrong and...

In the double-slit experiment, Michelle strongly believes the slit separation printed by factory is wrong and it should read 2.0 mm. She placed a screen 2.0m from the slits. Vincent illuminates the slits with two lasers one with wavelengths of700 nm and the other of 450 nm simultaneously. At what distance from the central maximum on the screen will a bright fringe from one pattern first coincide with a bright fringe from the other?

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