Figure 27.56 shows a double slit located a distance x from a screen, with the distance from the center of the screen given by y. When the distance d between the slits is relatively large, there will be numerous bright spots, called fringes. Show that, for small angles (where sinθ ≈  θ, with θ in radians), the distance between fringes is given by Δy = x λld.

Transcribed Image Text:

0 x Screen Ay=X₁ y