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CSE · Paper I · Waves & Opticscse-1998-subject-02-006

Fabry–Pérot interferometer — UPSC Physics Optional CSE 1998 Paper I

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Calculate the minimum plate separation in a Fabry-Perot interferometer to obtain free spectral range of 0.05\text{\AA} in the wave length region 5000\text{\AA}. Calculate also the smallest resolvable wavelength difference for reflectivity of 0.95.

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