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A beam of light strikes a sheet of glass at an angle of 58.0 ∘ with...

A beam of light strikes a sheet of glass at an angle of 58.0 ∘ with the normal in air. You observe that red light makes an angle of 38.5 ∘ with the normal in the glass, while violet light makes a 37.4 ∘ angle. What are the indexes of refraction of this glass for these colors of light? What are the speeds of red and violet light in the glass?

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