Practicing Success
Read the information given below to answer In Young’s double slit experiment as shown in figure, interference of light waves were observed on the screen. Thomas Young made two pinholes S1 and S2 (very close to each other) on an opaque screen in front of parent source S S1 and S2 behaved as coherent sources, and produced interference patten on the screen which has alternate bright fringe and dark fringes. This experiment proved Huygen’s wave theory of Light. |
Path difference between the, waves meeting at point P is given by |
\(\frac{xD}{d}\) \(\frac{xd}{D}\) \(\frac{2xD}{d}\) \(\frac{1xd}{2D}\) |
\(\frac{xd}{D}\) |
We know, position of a point where path difference Δx is , x = \(\frac{ΔxD}{d}\) ∴ Δx = \(\frac{xd}{D}\) |