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11-11-2016
Physics

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What is the critical angle c for total internal reflection if the material is clear acrylic, with a refractive index of 1.5?

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scme1702 scme1702

16-11-2016

Refractive index is related by the formula:
n = sin(∅₂) / sin(∅₁)
Here, ∅₂ = 90° in the case of total internal reflection.
1.5 = 1/sin(∅₁)
∅₁ = 41.8°

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