A diffraction grating has 2000 lines per centimetre. At what angle will the first order minimum be for a 520-nm-wavelength green light?
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Diffraction Grating 1. A diffraction grating has 600 rulings / mm.Light from a sodium vapor lamp having a wavelength of 589 nm isincident on the grating. At what angle(s) will the diffractionspots (maxima) occur? Use m? = d sin?, where d is the spacingbetween rulings (in meters), ? is the wavelength of light (also inmeters), and ? is the angle at which the maxima occur.
How many lines per centimeter are there on this diffraction grating that gives the first-order maximum for 470 nm blue light at an angle of 25 degrees?