34. Wave Optics
Diffraction
8PRACTICE PROBLEM
Consider a diffraction grating with line spacing large enough to allow the small-angle approximation (tanθ ≈ sin θ ≈ θ). Determine the fringe separation, Δy for the first bright fringe, on the screen that corresponds to a wavelength difference, Δλ in terms of d the line spacing, L the distance to the screen, and Δλ.
Consider a diffraction grating with line spacing large enough to allow the small-angle approximation (tanθ ≈ sin θ ≈ θ). Determine the fringe separation, Δy for the first bright fringe, on the screen that corresponds to a wavelength difference, Δλ in terms of d the line spacing, L the distance to the screen, and Δλ.