In Young's double-slit experiment, fringe width $\beta$ is given by:

1. A $\lambda D/d$ Correct answer
2. B $\lambda d/D$
3. C $D/(\lambda d)$
4. D $\lambda/(Dd)$

Solution

$\beta = \lambda D/d$.

About this question

Subject: Physics · Chapter: Optics · Topic: Wave Optics: Interference

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