The resolving power R of a grating can have units:
A)cm
B)degree/nm
C)watt
D)nm/cm
E)watt/nm

Question

Quizplus · Accepted Answer

The resolving power R of a grating is defined as R=λ/Δλ, where λ is the wavelength of the incident light and Δλ is the smallest wavelength difference that can be resolved by the grating. Therefore, the units of R are the units of wavelength divided by the units of wavelength difference, which gives us nm/cm.

The Resolving Power R of a Grating Can Have Units