A layer of benzene (n = 1.50) 2.60 cm deep floats on water (n = 1.33) that is 6.50 cm deep. What is the apparent distance from the upper benzene surface to the bottom of the water layer when it is viewed at normal incidence?
1) 3.45 cm
2) 6.62 cm
3) 66.2 cm
4) 345 cm
5) 662 cm