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A white light shines through a diffraction grating that is ruled at 900 lines/cm. A detector is 1.2 cm long and is to be used to measure light between 564.6 and 571.2 nm. If the detector is to measure light from the 7 th order spectrum, how far from the grating should the screen with the detector on it be placed
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A white light shines through a diffraction grating that is ruled at 900 lines/cm. A detector is 1.2...
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