Question: A diffraction grating with a width of 2.1 cm contains 1050 lines/cm across that width. For an incident wavelength of 610 nm, what is

  A diffraction grating with a width of 2.1 cm contains 1050 lines/cm 

A diffraction grating with a width of 2.1 cm contains 1050 lines/cm across that width. For an incident wavelength of 610 nm, what is the smallest wavelength difference this grating can resolve in the second order?

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