First slide

Young's double slit Experiment

Question

In Young's double slit interference experiment, the slit separation is made 3 fold. The fringe width becomes

Easy

A

1/3 times
B

1/9 times
C

3 times
D

9 times

Solution

$β \propto \frac{1}{d} \Rightarrow$ If d becomes thrice, then $β$ become $\frac{1}{3}$ times.

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