Mastering Physics Solutions Chapter 27 Optical Instruments Mastering Physics SolutionsChapter 27 Optical Instruments Q.1CQ Why is it restful to your eyes to gaze off into the distance? Solution: When a person with normal vision relaxes the cilliary muscles of the eye. An object at infinity is in focus. In a nearsighted person , however , a totally relaxed eye focuses … [Read more...] about Mastering Physics Solutions Chapter 27 Optical Instruments