Refraction

5 460 0 3

Medium 2

2 1Medium 1

Figure 5An optical device consists of two glass blocks of different indices of refraction, arranged as shown in figure 5. The refractive index from air to medium 1 is 1.2. The refractive index from medium 1to medium 2 is 1.25a) If light is incident at 60o on the block with the smaller refractive index, determine the angles 1, 2, 3, 4 and 5. b) What is the velocity of light in medium 1? Speed of light (c) c = 3 x108 m s-1.