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The distance between the first and fifth minima of a single-slit diffraction pattern is 0.400 mm...

The distance between the first and fifth minima of a single-slit diffraction pattern is 0.400 mm with the screen 43.0 cm away from the slit, when light of wavelength 530 nm is used. (a) Find the slit width. (b) Calculate the angle θ of the first diffraction minimum.

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