Question

Why three gratings are used in monochromater?

Answer 1

Explanation:

A monochromator can use either the phenomenon of optical dispersion in a prism, or that of diffraction using a diffraction grating, to spatially separate the colors of light. It usually has a mechanism for directing the selected color to an exit slit. Usually the grating or the prism is used in a reflective mode.

Answer 2

Answer:

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