cse • paper_1 • waves_oscillationscse-2010-subject-02-004
Fabry–Pérot interferometer — UPSC CSE 2010 Physics PYQ
Buy PYQ Solution Manual →An optical beam of spectral width 7.5\,\mathrm{GHz} at wavelength \lambda = 600\,\mathrm{nm} is incident normally on Fabry-Perot etalon of thickness 100\,\mathrm{mm}. Taking refractive index unity, find the number of axial modes which can be supported by the etalon.
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