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QUESTION
Light from a He-Ne laser ( lambda = 632.8 nm ) strikes a pair of slits at normal incidence, forming a double-slit interference pattern on a screen...
Light from a He-Ne laser ( lambda = 632.8 nm ) strikes a pair of slits at normal incidence, forming a double-slit interference pattern on a screen located 1.30 m from the slits. The figure shows the interference pattern observed on the screen. What is the slit separation?
