Problem

Problem

Find the half angular width of the central bright maximum in the Fraunhofer diffraction pattern of a slit of width 12×10−5 cm12 \times 10^{-5} \text{ cm} when the slit is illuminated by monochromatic light of wavelength 6000 A˚6000 \text{ \AA} . (a) 40∘40^\circ (b) 45∘45^\circ (c) 30∘30^\circ (d) 60∘60^\circ

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