A Diffraction Grating Has 2500 Lines/cm $\mu$ M
B) 250 Nm
C) 400 Nm
D) 2

A diffraction grating has 2500 lines/cm. What is the slit separation?

A) 4.0 $\mu$ m
B) 250 nm
C) 400 nm
D) 2.5 $\mu$ m