A diffraction grating has N slits Show that the resolving power R of the grating is given by R mN, where m is the order of interference which is under observation

Question: A diffraction grating has N slits. Show that the resolving power R = / of the grating is given by R = mN, where m

A diffraction grating has N slits. Show that the resolving power R = λ/∆λ of the grating is given by R = mN, where m is the order of interference which is under observation.

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