Refractive Index 0.0 / 5 ? PhysicsMedical PhysicsGCSEAQA Created by: SimanaCreated on: 29-10-15 12:10 What is Refraction? When waves change direction as they enter a different medium 1 of 6 What causes Refraction? The change in density from one medium to the other-which changes the speed of the waves. 2 of 6 What happens when waves slow down? They bend towards the normal. 3 of 6 What happens if a wave hits a boundary at 90 degree? It will not change direction but will slow down. 4 of 6 What is the Refractive Index of a medium? The ratio of speed of light in a vacuum to speed of light in that medium. 5 of 6 What is the formula of refractive index? Refractive index (n)= sin i/sin r 6 of 6
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