1. What is the relationship between the angles of incidence and reflection? 4. What is the rel tionship between the coject and i nage distance for a male mi ror? 3. Plot a graph of sind , () axis vs sine. (x axis) and, from the slore, calculate the refractive index or the rectangular olown (The refractive index of air is 1.00027 which you can approximate to 1 0.) ". Calculate the refractive index of the semicircular block. 5. What happened to the refracted ra, when the angle of incidence was larger than the critical angle? 6. What happened to the intensity of the reflected ra, when the angle of incidence was larger than the critical angle