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White Light Diffraction

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.