. Part B - Refraction: Low to High Refractive Index: 1. Compare the observed and calculated refracted ray angles by calculating the % error. Record values in the below table. 2. Is there a difference between the observed and calculated refracted ray angles? Discuss in your lab report. 3. What would happen if the incident ray angle remained constant and the refractive index of the lower "higher refractive index" material was decreased to 1.20 - does the Refracted ray