Find the angular separation in the first-order spectrum


A diffraction grating that has 2000 slits per centimeter is used to analyze the spectrum of mercury.

(a) Find the angular separation in the first-order spectrum of the two lines that have wavelengths equal to 579 nm and 577 nm.

(b) How wide must the beam on the grating be for these lines to be resolved?

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Physics: Find the angular separation in the first-order spectrum
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