Question 11 (2 points) Listen A ray of monochromatic light is traveling through flint glass. The ray strikes the flint glass at an angle of incidence greater than the critical angle for flint glass. Which diagram best represents the path of this light ray? O Normal Flint glass Air O Normal Flint glass Air O Normal Flint glass Ur O Normal Flint glass AirQuestion 12 (2 points) Listen Two students are conducting an investigation to determine the identity of an unknown liquid. They use a laser pointer to shine a light through the substance at varying angles. Each time, they record the angle of their incident beam and the angle of the refracted beam. Use the tables provided to identify the most likely identity of the substance and justify your answer. For all trials, the index of refraction in air is 1.00. (Tip: Use Snell's Law Calculation) Angle of Angle of incidence refraction 50 3.62 100 7.220 20 14.340 Index of Refraction Table Water 1.33 Milk 1.38 Olive Oil 1.47 Cedar Oil 1.52 O' Milk - This is the index value that most closely matches the results gathered during the experiment using Snell's Law. Water - According to Snell's Law, an angle of refraction less than the angle of incidence indicates that the index of refraction is greater in the second material than the first. The incident and refracted angles are close so it is most likely water which has the closest index of refraction to air of the given choices. O Olive oil - As the angle of incidence increases, the angle of refraction increases. O Cedar oil - This substance has the greatest difference in the index of refraction compared to air and therefore explains why the light is bending as much as was observed.Question 13 (4 points) Listen A student reasoned if light was a wave, then it would diffract when it passed through a small opening. To test the hypothesis, the student went outside on a sunny day with a cardboard box with a pinhole on one side. When the student pointed the hole at the sun, a diffraction pattern did indeed form on the opposite side. So, the student was very happy because the results of the investigation supported the claim light displayed characteristics of a wave. What was interesting though, was the diffraction pattern looked something like the image below. In the center, there was a patch almost entirely white. On either side, the fringes looked like rainbows. To make it simpler, the left and right fringes are divided in to red, green, and blue. What color are the shaded areas? Why? O Blue, because it has a high frequency. ORed, because it has a high frequency. Red, because it has a long wavelength. Blue, because it has a long wavelength