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Interference of Light

Problem 5.84

A plane monochromatic light wave with wavelength λ\lambda falls on the surface of a glass wedge whose faces form an angle α≪1\alpha \ll 1. The plane of incidence is perpendicular to the edge, the angle of incidence is θ1\theta_{1}. Find the distance between the neighbouring fringe maxima on the screen placed at right angles to reflected light

Reveal Answer
Δx=λcos⁡θ12αn2−sin⁡2θ1\Delta x=\frac{\lambda \cos \theta_{1}}{2 \alpha \sqrt{n^{2}-\sin ^{2} \theta_{1}}}
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