As the light is shone through the prism Henry notices that it reflects off of the bottom side and back into the prism without leaving it. Describe what has happened and why this has occurred. (b) Henry wants to find the angle at which the incident light reflects off of the bottom of the prism from inside the glass. He reads that the glass prism has a refractive index of 1.6. Assuming air has a refractive index of 1.0, calculate the critical angle for this prism.

As the light is shone through the prism Henry notices that it reflects off of the bottom side and back into the prism without leaving it. Describe what has happened and why this has occurred. (b) Henry wants to find the angle at which the incident light reflects off of the bottom of the prism from inside the glass. He reads that the glass prism has a refractive index of 1.6. Assuming air has a refractive index of 1.0, calculate the critical angle for this prism.

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