(1.3) If you extend your line of best fit you will see that the line crosses the point of sin (19,9 f) =1. i) What is the refracted angle at this point? ii) What is the incident angle? iii) If you continue to increase 6 inc I what happens to sin (Bref) (3 marks) (Hint: can you have sin 6m. > 1?) This is called Total Internal Reflection, and an important concept in designing optical fibers