In Young’s double-slit experiment, slit separation d is 2 mm, wavelength is 5896 Å and screen distance is 100 cm. If angular width of fringes is 0.20°, to increase it to 0.21° (with same λ and D), slit separation must be changed to:

Physics · Wave Optics · Young's Double-Slit Experiment (YDSE)

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In Young’s double-slit experiment, slit separation d is 2 mm, wavelength is 5896 Å and screen distance is 100 cm. If angular width of fringes is 0.20°, to increase it to 0.21° (with same λ and D), slit separation must be changed to:

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