E3r light from a white source passes through a
filter that transmits only the band of wave-
lengths from 400 nm to 600 nm. when this
filtered light is incident normally on a certain
diffraction grating, the 400 nm light in one
order of the spectrum is diffracted at the same
angle, 30, as the 600 nm light in the adjacent
order. find the spacing between the lines in
the grating.
[c(o)]