Question: A FabryPerot interferometer consists of two parallel, half-silvered mirrors separated by a small distance a. Show that when light is incident on the interferometer with

A Fabry–Perot interferometer consists of two parallel, half-silvered mirrors separated by a small distance a. Show that when light is incident on the interferometer with an angle of incidence θ, the transmitted light will have maximum intensity when a = (mλ/2) cos θ.

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