In this part of the lab, you are going to investigate refraction as light goes from water to air. To do this, change Material 1 to Water and change Material 2 to Air. For each of the scenarios below, set the angle of incident to the required angle and record the angle of refraction. Use these values, along with the index of refraction for both mediums, to verify Snell’s Law for each scenario.
Scenario 1:
| Angle of Incidence
|
Water Index of Refraction
|
|
| 20o | 1.33 | |
| Angle of Refraction
|
Air Index of Refraction
|
|
| 1.00 |
Scenario 2:
| Angle of Incidence
|
Water Index of Refraction
|
|
| 45o | 1.33 | |
| Angle of Refraction
|
Air Index of Refraction
|
|
| 1.00 |
Questions
1. In both scenarios, were you able to verify Snell’s Law?
2. Make a general statement comparing the angle of incidence to the angle of refraction as light moves from a dense material to a less dense material. Does this agree with your prediction in part 1?
3. Set the angle of incidence to 50o. What happens to the refracted ray at this and higher angles of incidence in this scenario?