A thin lens with a focal length of 5.70 cm - Part A is used as a simple magnifier. For related problem-solving tips and What angular magnification is obtainable with the lens if the object is at the focal point? strategies, you may want to view a Video Tutor Solution of A simple magnifier. When an object is examined through the lens, how close can it be brought to the lens? Assume that the image viewed by the eye is at infinity and that the lens is very close to the eye. Enter the smallest distance the object can be from the lens in centimeters.