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Unreasonable Results Light traveling from water to a gemstone strikes the surface at an angle of $80.0^{\circ}$ and has an angle of refraction of $15.2^{\circ}$ . (a) What is the speed of light in the gemstone? (b) What isunreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?

Part (a): $6.00 \times 10^{7} \mathrm{m} / \mathrm{s}$Part (b): The speed of light in this material is so slower than that of diamond.Part (c): The angle of refraction is so small in comparison to the same angle of incidence.

Physics 103

Chapter 25

Geometric Optics

Reflection and Refraction of Light

Rutgers, The State University of New Jersey

Hope College

University of Winnipeg

McMaster University

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but a off the given problem in order to find the speed of light in the medium. Well, find the refractive index off the medium and then we'll substituting the farmland, find the speed of light and medium so you want to find the speed. Uh, you know Snell's law and their physical too. And I sign that I divided by sign that if so, substituting will use here 1.3 t for water R sine 80 year divided by the sine theta. If is 15.2, I'll simply find this expression gives us in five. Then we can find the speed of light in that medium this speed off light and wrecking the rebel refractor next enough which we just found. So three dams 80 or C ready. This gives a six times 10 to the power seven meter per second. This is the speed of light in that video in part B. Ah, the spear flight in this material is slower than the speed off writing the diamond so slower thrower. Then they look for diamond date or for diamond nine mond and see the Anglo for a fraction. Refraction is so small in comparison, um, to then same angle off incident

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