Question
If the separation between the slits in a Young's double slit experiment is increased, what happens to the fringe-width? If the separation is increased too much, will the fringe pattern remain detectable?
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Answer
The fringe width in Young's double slit experiment depends on the separation of the slits.$\text{x}=\frac{\lambda\text{D}}{\text{d}},$
where$\lambda$ = wavelength
x = fringe width D = distance between slits and screen d = separation between slits On increasing d, fringe width decreases. If the separation is increased too much, the fringes will merge with each other and the fringe pattern won't be detectable.
where$\lambda$ = wavelength
x = fringe width D = distance between slits and screen d = separation between slits On increasing d, fringe width decreases. If the separation is increased too much, the fringes will merge with each other and the fringe pattern won't be detectable.
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