Consider two slabs of material with the same thickness, however made of different materials differing in their index of refraction. Which of the following are true?
1. The frequency of light will differ in the two slabs.
2. The speed of light will differ in the two slabs.
3. The wavelength of light will be the same in the two slabs.
4. Light incident normally will refract at dissimilar angles in the two slabs.
5. Light incident at an angle from normal will reflect off the two slabs at dissimilar angles.