- #1
rno88
- 3
- 0
Homework Statement
In a vessel, a layer of benzene (n=1.50) 6 cm deep floats on water (n=1.33) 4 cm deep. Determine the apparent distance of the bottom of the vessel below the upper surface of the benzene when viewed vertically through air. Ans 7 cm
Homework Equations
Snell's law n sin (theta)=n sin (theta)
apparent depth/actual depth = n of air / n of material
The Attempt at a Solution
at first I thought I would solve the equation in parts so that for benzene:
apparent depth = 1(6 cm)/1.5 = 4 cm
and for the water
apparent depth = 1.5 (4 cm)/1.33 = 4.5 cm
adding them together you get 8.5 which is not the right answer. I don't know how you would use Snell's law with not having any theta.