A diffraction grating is made up of slits of width 310 nm


A diffraction grating is made up of slits of width 310 nm with a 930 nm separation between centers. The grating is illuminated by monochromatic plane waves, λ = 615 nm, the angle of incidence being zero.

How many diffraction maxima are there?

Find the width of the spectral lines observed in first order if the grating has 1120 slits.

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Physics: A diffraction grating is made up of slits of width 310 nm
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