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In a two-slit experiment using laser light, the distance between the slits and the screen is...

In a two-slit experiment using laser light, the distance between the slits and the screen is 1.10 m, and the distance between the slits is 0.040 mm. If the second order (m=2) bright fringe is measured to be 4.20 cm from the centerline on the screen, what is the wavelength of light?

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