Question

3. A tall cup of diameter Dis partially filled with a liquid with the refraction index n to a height of H A student looks downward just over the left rim of the cup at an angle with the waters surface. At this angle, the refraction of light at the waters How surface just barely allows her to see the bottom-right corner of the cup. A sketch of the path of light is shown at the right. Derive the formula for the height of the cup Houp. Calculate its numerical value for n 1.33 (water), D 14.64 cm, H. 7.8 cm, 0 40.47 water
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Answer #1

watox oC cos0 sin X ว่า wottoucep 7)こ C h -i cud 1-33 H. _ I 5.65 cm c中

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