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In Young’s double slit experiment, show that fringe width (fringe separation) is given by where the…
In Young’s double slit experiment, show that fringe width $\omega$ (fringe separation) is given by
$\omega = \frac{\lambda D}{d}$
where the terms have their usual meaning. (Recall)
Given: Path difference $\Delta x = \frac{yd}{D}$ between waves from slits $S_1$ and $S_2$
To show: $\omega = \frac{\lambda D}{d}$
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From ISC 2026 Specimen Physics Paper 1, question 14.