Question
Suppose light travels from water to another substance, with an angle of incidence of $10.0^\circ$ and an angle of refraction of $14.9^\circ$. (a) What is the index of refraction of the other substance? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?
1. $0.898$
2. The index of refraction is greater than 1. This implies that the speed of light in the medium is greater than the speed of light in a vacuum. This is not possible.
3. The angle $\theta_2$ is too large.
Solution Video