A diffraction grating having 180 lines/mm is illuminated with a light signal containing
Chapter 36, Problem 51(choose chapter or problem)
A diffraction grating having 180 lines/mm is illuminated with a light signal containing only two wavelengths, l1 400 nm and l2 500 nm. The signal is incident perpendicularly on the grating. (a) What is the angular separation between the secondorder maxima of these two wavelengths? (b) What is the smallest angle at which two of the resulting maxima are superimposed? (c) What is the highest order for which maxima for both wavelengths are present in the diffraction pattern?
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