A plane wave (λ = 5000 Å) falls normally on a long narrow slit of width 0.5 mm. Calculate the angles of diffraction corresponding to the first three minima. Repeat the calculations corresponding to a slit width of 0.1 mm. Interpret physically the change in the diffraction pattern
[ Ans. 0.057°, 0.115°, 0.17°; 0.29°, 0.57°, 0.86°]
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