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Monochromatic green light, of wavelength 550 nm, illuminates two parallel narrow slits `5.60 mu m` apart. Calculate the angular deviation of the third-order (m=3) bright fringe (a) in radians and (b) in degrees.

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(a) 0.299 rad, (b) `17.1^(@)`
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RESNICK AND HALLIDAY-INTERFERENCE AND DIFFRACTION -PROBLEMS
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