Refraction -- A fish under water 1. The problem statement, all variables and given/known data 1 A fish under water obliquely sees a fisher-man standing on the bank of a lake. How does he appear? 2 A parallel sided glass plate is introduced in the path of a converging beam. What happens to the point of convergence of the beam? 3. The attempt at a solution It's not that I don't know how to solve these questions it's just that my answer differs from the one the textbook gives. 1 The textbook answer is that he appears taller than he actually is. Why? I thought that he would appear a bit higher than he actually is due to normal shift? 2 Textbook answer is that the point of convergence shifts towards the glass plate. But when I visualize, I think that it moves further away from the glass plate.