Question 2 1 pts A slab of material 1 rests on the surface of a slab of material 2. A light ray in material 1 has an angle of incidence of 30° on the interface between the materials, while the ray in material 2 has an angle of refraction of 45°. What is the critical angle of incidence for total internal reflection for a ray of light going from material 2 to material 1? In this case there is no critical angle. 45° 30° At least one of the indices of refraction or its equivalent is needed to solve this problem.
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Snell's Law states that $n_1 \sin(\theta_1) = n_2 \sin(\theta_2)$, where $n_1$ and $n_2$ are the indices of refraction of the two materials, and $\theta_1$ and $\theta_2$ are the angles of incidence and refraction, respectively. Show more…
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