- For the potential steps question, a large number of students think that a downward potential step has less/no reflection.
- Exam (S98):
- In interview, 4/6 of the students
- “No reflection because total energy is greater than potential”
- “there is a reflection in A only because I know the answer”;
- “…B is greater because it is like running into a wall… case A is like a ball going down… and speed up.”