1. A thin lens with focal length f = 50 cm is used to make an inmage of an object that is located a distance p = 10cm away. what is the magnification of the image?
2. You are trying to read some size 2 small print text for which the letters are 1mm tall. At the near point of your eye (assume 25cm) the text is still too small to read. To read the text you hold a magnifying glass with focal length f=3cm infront of your eye and place text at the focal point of the lens. What is the angular magnification of the lense?
3. You are standing between two tall plane mirrors. You are facing one mirror and are .5 away from it. The mirrors are separated by 1.5m. How far behind the mirror you are facing is the second image of the front of your face?