IPhO 2017 Problem 2

Physics

Problem

Theory T2 English (Official) m T m m m w T w page 1 of 6 Theory T2 English (Official) cVw cVm ve p m V p m V κ M w P S P S P page 2 of 6 Theory T2 English (Official) page 3 of 6 Theory T2 English (Official) P P o P P z v(z) =v 0 + az a p = sinθ(z)/v(z) θ(z) p p v 0 a T z v i δz i T i v v 1 2 v p δz δz δz 3 1 2 3 page 4 of 6 Theory T2 English (Official) λL/2 L ≫ λ h page 5 of 6 Theory T2 English (Official) d ρ d A 0 0 page 6 of 6

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