Snell's law of refraction**

High level workflow

Example 1
Solution
Example 2
Solution
Problem 1
1 points
Problem 2
1 points

Total internal reflection

Example 3
Solution
Problem 3
1 points
Problem 4
2 points
Problem 5
1 points
Problem 6
2.5 points
Example 4
Solution
Problem 7
3 points

Apparent distance to objects

Example 5
Solution
Example 6
Solution
Problem 8
1 points
Problem 9
2 points
Problem 10
2 points
Problem 11
3 points
Problem 12
5 points