Light rays in a material with index of refrection 1.31 can undergo total interna

Question

Light rays in a material with index of refrection 1.31 can undergo total internal reflection when they strike the interface with another material at a critical angle of incidence. Find this material's index of refraction when the required critical angle is 76.7 Light rays in a material with index of refrection 1.31 can undergo total internal reflection when they strike the interface with another material at a critical angle of incidence. Find this material's index of refraction when the required critical angle is 76.7 Light rays in a material with index of refrection 1.31 can undergo total internal reflection when they strike the interface with another material at a critical angle of incidence. Find this material's index of refraction when the required critical angle is 76.7

Explanation / Answer

using snell law n1sinx1=n2sinx2 sin x2=1 for total reflection now 1.31 sin 77.7=n2 n2=1.279

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