Refractive Index and Apparent Depth · CAP 2010 #Q6
Physics · optics
Problem
Two identical glasses, one completely filled with water, and the other filled with vodka, are viewed directly from above. The refractive index of vodka is slightly greater than the refractive index of water. Which glass appears to have a greater depth of fluid?
a) the water glass;
b) the vodka glass;
c) neither glass because the apparent depth is the same as the real depth in both glasses;
d) neither glass, because the effect of the clear fluid is to reduce the apparent depth by the same factor in both glasses.