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Index of Refraction of Glass

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Light in air strikes a glass plate at an angle of 60 degrees. Part of the beam is reflected and part refracted. A measurement shows that the angle between the reflected and refracted beams is 90 degrees with each other. What is the index of refraction of the glass?

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The solution attaches a Word file with a diagram to help show how to find the index of refraction for an incident light beam on glass.

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Light in air strikes a glass plate at an angle of 60 degrees. Part of the beam is ...

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