Below is written by a student. I took a personal day. I'm so proud that they debated the answer!
Today's test was a little longer than expected. By the time everyone had finished, there was only twenty minutes left of class to begin whiteboarding. For the first three questions, the class reached a general consensus, using object distance and focal distance to solve for image distance and height. Things took a turn for the last question, as I'm guessing you predicted. We entered little schools of debate, motioning and scribbling to figure out what image, if any, would arise from reflection off of half a concave lens. Yet, as we reached the pinnacle of the debate, we were kicked out by the substitute and left with a number of literal and figurative question marks swimming around the question. We are hoping for some answers (okay not answers, more like insight) on Monday.
