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1) The refractive index of a transparent material can be determined by measuring the critical angle...

1) The refractive index of a transparent material can be determined by measuring the critical angle when the solid is in air. If ?c= 41.5° what is the index of refraction of the material?

2) A light ray strikes this material (from air) at an angle of 36.9° with respect to the normal of the surface. Calculate the angle of the reflected ray (in degrees).
I know this one is 36.9 degrees.

3) Calculate the angle of the refracted ray (in degrees).

4) Assume now that the light ray exits the material. It strikes the material-air boundary at an angle of 36.9° with respect to the normal. What is the angle of the refracted ray?

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