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CSE · Paper I · Waves & Opticscse-1992-subject-02-006

Diffraction (Question 2 (30 Marks)) — UPSC Physics Optional CSE 1992 Paper I

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Distinguish between Fresnel and Fraunhofer classes of diffraction of light. Discuss the theory of a plane grating and hence find an expression for the angular dispersion of a plane grating.

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