1. What is the size of the image on the retina of a 1.20x10" cm diameter human hair, held at arm's length (60.0 cm) away? Take the lens-to-retina distance to be 2.00 cm. 2. Calculate the magnification of an object placed 6.20 mm from a compound microscope that has a 6.00 mm focal length objective and a 50.0 mm focal length eyepiece. The objective and eyepiece are separated by 23.0 cm. 3. Two identical converging lenses of focal lengths fl = f2 = +15 cm are separated by a distance L = 6 cm, as shown in the Figure. A luminous source is placed a distance of 10 cm in front of the first lens. Locate the final image and determine the overall magnification of the system. Lens 1 Lens 2 f1 = +15 cm fy =+15 cm Object 10 cm L =6 cm 4. The optical system shown in the Figure consists of two lenses, of focal lengths fl = +12 cm and f2 = -32 cm, separated by a distance L = 22 cm. A luminous object with a height of 2.4 cm is placed 18 cm in front of the first lens. Find the position and the height of the final image Lens 1 Lens 2 f1 = +12 cm f2 =-32 cm Object 18 cm L =22 cm