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प्रश्न
What is the fringe width \(\beta\) in Young's double-slit experiment?
पर्याय
\[\beta=\frac{\lambda d}{D}\]
\[\beta=\frac{\lambda D}{d}\]
\[\beta=\frac{dD}{\lambda}\]
\[\beta=\frac{D}{\lambda d}\]
MCQ
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उत्तर
Fringe width is the distance between successive bright fringes or successive dark fringes. That spacing is \[\beta=\frac{\lambda D}{d}\].
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