cse • paper_1 • waves_oscillationscse-2001-subject-02-004
Diffraction — UPSC CSE 2001 Physics PYQ
Buy PYQ Solution Manual →Parallel rays fall on circular aperture of diameter 1 mm. At a certain position of the screen one gets a dark spot on an axial point. When the screen is moved by 12.5 cm, one again gets a dark spot. Determine \gamma (wavelength).
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