Diffraction gratings and double slits 0.0 / 5 ? PhysicsWavesA2/A-levelWJEC Created by: biran4454Created on: 07-02-22 14:52 SECTION 1 - DOUBLE SLIT EXPERIMENT click the right arrow to start 1 of 14 What variable is the distance between the slits? a 2 of 14 What variable is y? the distance between a maximum and the 0th order maximum 3 of 14 What variable is the normal distance between the double-slit and the screen? D (not d1 or d2) 4 of 14 Give the equation for wavelength in terms of a, y, and D (double slit) λ = ay/D 5 of 14 SECTION 2 - DIFFRACTION GRATING hi :) 6 of 14 What variable is the width of each grating slit? d (not D or d1) 7 of 14 Give the equation for wavelength in terms of n, y, and sinθ where n is the order maximum λ = (d sinθ) / n 8 of 14 Give the equation for distance between grating and screen (D) in terms of θ and y D = y / tanθ 9 of 14 SECTION 3 - Refractive indexes hi again! 10 of 14 What is the equation for Snell's law? n1 sinθ1 = n2 sinθ2 11 of 14 State the equation for refractive index n = c/v (v is speed of light in medium) 12 of 14 What is the equation for critical angle? sinθ = n2 / n1 where θ is the critical angle 13 of 14 TIR can only occur with light moving from a medium with a _______ refractive index to one with a ______ RI higher, lower 14 of 14
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