A. You are looking at an object 1.75 m tall 30 m away from you.Assuming the eye is completely relaxed and that the nodal point ofthe eye is 1.65 cm in front of the retina, calculate the height ofthe image of the object on the retina, assuming that it is infocus. What is the focal length and the refractive power of the eyeunder these conditions?

B. You have shifted your focus to a nearby object 12 cm talllocated a mere 0.6 m away. In doing so, your eye accommodates tobring its image into focus on the retina. What is the refractivepower of the eye in this case? How tall is the image on theretina.