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    White Light Diffraction

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    White light strikes a diffraction grating (540 lines/mm) at normal incidence. What is the longest wavelength that forms a third-order maximum?

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    Solution Preview

    We have grating law:
    (a + b) Sin (theta) = n * lambda
    where a + b = grating element
    theta = angle of diffraction with maximum value ...

    Solution Summary

    This solution uses grating law and shows complete calculations and answer.