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    A light ray hits a surface at an angle of 46o. The material on the other side of the surface has an index of refraction of 1.4 and the light is making an angle of 45.99o with the surface when it exits on this side. What is the index of refraction on the incident side of the interface?

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    A light ray hits a surface at an angle of 16o. The material on the other side of the surface has an index of refraction of 1.8 and the light is making an angle of 11.12o with the surface when it exits on this side. What is the index of refraction on the incident side of the interface?

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    A light ray hits a surface at an angle of 8o. The material on the other side of the surface has an index of refraction of 1.36 and the light is making an angle of 12.16o with the surface when it exits on this side. What is the index of refraction on the incident side of the interface?

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    A light ray hits a surface at an angle of 56o. The material on the other side of the surface has an index of refraction of 2.03 and the light is making an angle of 49.79o with the surface when it exits on this side. What is the index of refraction on the incident side of the interface?

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    A light ray hits a surface at an angle of 20o. The material on the other side of the surface has an index of refraction of 1.53 and the light is making an angle of 23.16o with the surface when it exits on this side. What is the index of refraction on the incident side of the interface?

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    A light ray hits a surface at an angle of 33o. The material on the other side of the surface has an index of refraction of 1.61 and the light is making an angle of 39.74o with the surface when it exits on this side. What is the index of refraction on the incident side of the interface?

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