- #1
issacnewton
- 1,004
- 31
Homework Statement
I have posted the snapshot of the problem.
Homework Equations
Snell's law equations
The Attempt at a Solution
Now the problem says that laser travels through air vertically upward to reach the outer surface of the glass half-cylinder. If that is the case, then from Snell's law, the angle at which the laser is entering the bottom should be zero with the vertical. But the diagram clearly shows that laser enters at some non zero angle to the vertical. So, is there any other way that laser will be going vertically upward to reach outer surface of the glass half-cylinder ? I am confused here.
Thanks