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A lens of focal length f gives diffraction pattern of F raunhoffer type of a slit having width a. If wavelength of light is `lambda`, the distance of first dark band and next bright band from axis is given byA. `(a)/(lambda)f`B. `(lambda)/(a)f`C. `(lambda)/(a f)`D. `a lambda f`

Answer» Correct Answer - B


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