A monochromatic light of wavelength 5600 A is incident normally on a single slit and the diffraction pattern is observed on a

Question

A monochromatic light of wavelength 5600 A is incident normally on a single slit and the diffraction pattern is observed on a screen If the distance between the central bright band and the third dark band is 2 4 cm and slit separation is 0 16 mm find the screen distance from the slit

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