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Light with a wavelength of 633 nm passes through a slit 6.38 ?m wide and falls...

Light with a wavelength of 633 nm passes through a slit 6.38 ?m wide and falls on a screen 1.60 m away. Find the distance on the screen from the central bright fringe to the third dark fringe above it. ___ cm

Monochromatic light passes through two slits separated by a distance of 0.0332 mm. If the angle to the third maximum above the central fringe is 3.21 degrees, what is the wavelength of the light? __ nm

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