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1. Light of 410 nm wavelength passes through a double slit. The interference figure is observed on a screen located 5.70 m from the slits.
1. Light of 410 nm wavelength passes through a double slit. The interference figure is observed on a screen located 5.70 m from the slits. The shiny fringes are spaced at 6.40 mm. What is the separation of the two slots? Give the answer in nm.
2. If the current in a cylindrical wire with a diameter of 2.80 mm is 380 uA, what is the average current density in the wire?
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