**Claim:** For a wave heading towards a boundary between two media at an oblique angle, $\omega_I = \omega_R = \omega_T$.
1. True
2. False
Note:
* Correct Answer: A
* All are the same
## Announcements
* Quiz 5 (this Friday)
* Construct the expression for plane wave given a description
* Both complex and real expressions
* Combine two plane waves and describe the resulting superposed wave
* Think: Problem 2 on HW 8
**Claim:** For a wave heading towards a boundary between two media at an oblique angle, at the boundary, $\mathbf{k}_I\cdot\mathbf{r} = \mathbf{k}_R\cdot\mathbf{r} \neq \mathbf{k}_T\cdot\mathbf{r}$.
1. True
2. False
Note:
* Correct Answer: B
* All are equal