Question

If a resolution (R) of 0.01 nm is desired for a monochromator with the grating from problem 2 and a focal length of 1.5 m, what is the minimum length that must be illuminated across the grating?

Answer 1

1588.53 lines/mm

Answer 2

\[R=\frac{\lambda }{\Delta \lambda}\rightarrow 0.01nm=\frac{\lambda }{\Delta \lambda}\]