MCQ
If the separation between slits in Young’s double slit experiment is reduced to $\frac{1}{3}rd,$ the fringe width becomes $n$ times. The value of $n$ is
- ✓$3$
- B$\frac{1}{3}$
- C$9$
- D$\frac{1}{9}$
✓
Answer
Correct option: A.
$3$
a
(a)$\beta \propto \frac{\lambda }{d}$ as $d \to \frac{d}{3}$ so $\beta \to 3\beta $ $\therefore \,\,\,n = 3$
(a)$\beta \propto \frac{\lambda }{d}$ as $d \to \frac{d}{3}$ so $\beta \to 3\beta $ $\therefore \,\,\,n = 3$
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