Question

We want to find the half-widths of the m = 7 and m = 20 maxima in the diffraction of light of wavelength λ = 500 nm by a grating with N = 5.00 × 10³ rulings and inter-ruling separation (grating spacing) d = 12.0 μm.

What is angle 07 for the m= 7 maximum? 07 =

Answer 1

Diffaetan gre tinp a defioad ac SindmA -6. 12.um 12X1 m d= gbing spacing 50ox10 m 500 nm Whon m7 Xio ((500 mx SC0-2917) 8-16.96 Yadian 1 (649) (31ad then 16.96(A 87 11 80 0.296 Tad

(C) ohen m = 20, ther 500x1o 'm) -S - SA 12x1o m Si.8233) = 56. 440 8. 20 AYad, then 56.44 (414) - 0.9846 Yad 20