Physics

Physics

Problem

Which one of the following expressions gives the fringe width β\beta in a Young’s double-slit experiment in terms of slit separation dd, distance to the screen DD, and wavelength λ\lambda? a) β=dλD\displaystyle \beta = \dfrac{d\lambda}{D} b) β=λD2d\displaystyle \beta = \dfrac{\lambda D}{2d} c) β=λDd\displaystyle \beta = \dfrac{\lambda D}{d} d) β=λDd\displaystyle \beta = \lambda\sqrt{\dfrac{D}{d}}

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