Consider the Czerny-Turner monochromator shown below. Assume that all the reflective components (except the grating) are made with Ag mirrors. Also assume that the grating (1800 lines/mm) is positioned at an optimal angle. Reference plots for the grating and mirrors are shown on the next page. If 100 mW of radiation at 500 nm from a light emitting diode is focused onto the entrance slit, what is the intensity at the exit slit of the monochromator?

Typical Effeciency Curves for Holographic Gratings Optimized for Visible (VIS) Spectrum