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  4. In Young’s double slit experiment, fringe order is represented by m, then fringe width is

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Q. In Young’s double slit experiment, fringe order is represented by m, then fringe width is

AIIMSAIIMS 2012Wave Optics

Solution:

The fringe width is given by
$\beta=\frac{\lambda D}{d}$
Here D is the separation between screen and slits and d is the separation between slits.