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In Young's double slit experiment, distance between the slits $S_1$ and $S_2$ is d and the distance between slits and screen is D. Then first missing wavelength on the screen in front of $S_1$ is |
$\frac{d^2}{D}$ $\frac{d^2}{2D}$ $\frac{D}{d^2}$ None of these |
$\frac{d^2}{D}$ |
Path difference, $Δx=\frac{d^2}{2D}$ For first missing wavelength, $\frac{d^2}{2D}=\frac{λ}{2}$ or $λ=\frac{d^2}{D}$ |
