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14-12-2022
Physics

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A student sent white light through a diffraction grating with an unknown number of lines/m. First-order bright fringes were seen on either side of a light source, 1.00 m away from the diffraction grating, similar to the demonstration we did in the classroom. The distances to the left and right first-order pure violet bright fringes were measured to be 20.5 cm and 21.2 cm, respectively

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