A diffraction grating with a width of 50 mm contains 541


A diffraction grating with a width of 5.0 mm contains 541 lines (rulings) per mm. When it is fully illuminated, what is the smallest wavelength interval this grating can resolve in the 3rd order, if the average wavelength is taken to be 682 nm?

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Physics: A diffraction grating with a width of 50 mm contains 541
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