Question

Please help solve 9

9) You are asked to find the index of refraction of a chunk of plastic with one planar side. Luckily, the laser can bee seen inside the plastic due to scattering. You aim the laser at the plane surface at several angles and collect the data shown. Create an appropriate graph (you want to select your dependent and independent variables so that the graph may be fit with a straight line) and use your calculator to find the best fit, which should contain the index of refraction as either the slope or intercept (you'll have to figure out which). 15 30 45 60 75 18 26 32 37

Answer 1

Sin I 1.2 0.8 0.6 0.4 0.2 0.1 0.2 0.3 0.4 0.5 0.6 0.7

Graph of Sin I vs Sin R

Slope =1.6

refractive index =1.6