2 - Refraction OPE\" the simulalien [WWW]. N. "n .\" -'---. i=9 w-u-r- of! Run the simulation and select Intro Light source: Ray. Material above: Air. Material below: Glass. You can move around the light source and vary the angle of incidence. Use the protractor located on the bottom left corner to measure the angles. a. if you decrease the angle of incidence what happens to angle of refraction? 9. How does the angle of incidence compare to the angle of refraction? ID. if you decrease the index: of refraction of the material below what happens to angle of refraction? Use the intensity detector located on the bottom left corner. I i. if you increase the index of refraction of the material below what happens to the intensity of the refrained ray? Set the angle of incidence at 61] degree. Light source: Ray. Material above: Air. Material below: Glass. 12. What angle of refraction do you measure with the protractor? (deg) 13. What angle of refraction do you obtain using Snell's Law? {deg} 14. Calculate the 96 error of the values obtained in question 9 and 11\".}. Select Material above: Air. Material below: Mystery A. 15. What is the index of refraction of Mystery A? Open the link WWW: 16. Which material best matches the result of your calculation in question 15? 3 - Critical Angle Restart the simulation {click the bottom right yellow button). Light source: Ray. Material above: Water. Material below: Air. Start with an angle of incidence of about 60 degree and slowlf,F decrease it. 1?. The refracted rat-l disappears when the angle of incidence is larger than which value? When the angle of incident is larger than the critical angle the light hits the air' surface and it lbounces hack' into the water. 13. What is the name of the optical effect? Select Material above: Mystery B. Material below: Air. Repeat the procedure 19. What is the index of refraction of Mystery B? lCtpen the link 20. Which material IJt'Sl matches the result elyeur calculation in question 19