Question: (a) Find the angle between the first minima for the two sodium vapor lines, which have wavelengths of 589.1 and 589.6 nm, when they fall

(a) Find the angle between the first minima for the two sodium vapor lines, which have wavelengths of 589.1 and 589.6 nm, when they fall upon a single slit of width 2.00 μm.

(b) What is the distance between these minima if the diffraction pattern falls on a screen 1.00 m from the slit? 

(c) Discuss the ease or difficulty of measuring such a distance.

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