Question
Students in a lab group are given a plastic cube with a hollow cube-shaped space in the middle that fills about half the volume of the cube. The index of refraction of the plastic is known. The hollow space is filled with a gas, and the students are asked to collect the data needed to find the index of refraction of the gas. The students take the following set of measurements:
• Angle of incidence of the light in the air above the plastic block: 30°
• Angle of refraction of the beam as it enters the plastic from the air: 45°
• Angle of refraction of the beam as it enters the plastic from the gas: 45°
The three measurements are shared with a second lab group. Can the second group determine a value for the index of refraction of the gas from only this data?
1. Yes, because they have information about the beam in air and in the plastic above the gas.
2. Yes, because they have information about the beam on both sides of the gas.
3. No, because they need additional information to determine the angle of the beam in the gas.
4. No, because they do not have multiple data points to analyze.