# HW-13s - Consider the interference between two slits separated by a distance on which light of wavelength shines producing a pattern of dark and

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Consider the interference between two slits separated by a distance on which light of wavelength . - shines, producing a pattern of dark and bright fringes on a screen a distance away from the H slits. First draw a sketch of this physical situation, showing light shining on two slits and passing through them to the screen beyond it. Then calculate and enter in the tables below the first three angles at which interference maxima (bright fringes) and interference minima (dark fringes) occur for red (700 nm) and violet (400 nm) light for the different separations shown, and the positions of these bright and dark fringes (relative to the central maximum) on the screen. Separation 10.0 m . Angle Position when = 1.0 m Position when = 2.0 m RED LIGHT First minimum 2.01° 3.5 cm HH 7.0 cm First maximum 4.01° 7.0 cm 14.0 cm Second minimum 6.03° 10.6 cm 21.2 cm Second maximum 8.05° 14.2 cm 28.4 cm Third minimum 10.1° 17.9 cm 35.7 cm Third maximum 12.1° 21.6 cm 33.3 cm VIOLET LIGHT First minimum 1.15° 2.0 cm 4.0 cm First maximum 2.29° 4.0 cm 8.0 cm Second minimum 3.44° 6.0 cm 12.0 cm Second maximum 4.59° 8.0 cm

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## This note was uploaded on 02/11/2012 for the course PHYSICS 112 taught by Professor Fretwell during the Summer '08 term at Iowa State.

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HW-13s - Consider the interference between two slits separated by a distance on which light of wavelength shines producing a pattern of dark and

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