Answer Happy

In Figure (a), a beam of light in material 1 is incident on a boundary at an angle 01 = 38º. Some of the light travels through material 2, and then some of it emerges into material 3. The two boundaries between the three materials are parallel. The final direction of the beam depends, in part, on the index of refraction ng of the third material. Figure (b) gives the angle of refraction 03 in that material versus ng for a range of possible ng values. The vertical axis scale is set by 03a = 30° and 636 = 46°. (a) What is the index of refraction of material 1, or is the index impossible to calculate without more information (enter "0")? (b) What is the index of refraction of material 2, or is the index impossible to calculate without more information (enter "0")? (c) If e, is changed to 75º and the index of refraction of material 3 is 2.5, what is 03? w 3 1.5 1.9 1.7 (6)