A diffraction grating is made up of slits of width 300 nm with separation 900 nm. The
Chapter 36, Problem 48(choose chapter or problem)
A diffraction grating is made up of slits of width 300 nm with separation 900 nm. The grating is illuminated by monochromatic plane waves of wavelength l 600 nm at normal incidence. (a) How many maxima are there in the full diffraction pattern? (b) What is the angular width of a spectral line observed in the first order if the grating has 1000 slits?
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