College Physics: A Strategic Approach (3rd Edition)

3rd Edition

ISBN: 9780321879721

Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher: PEARSON

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Textbook Question

Chapter 19, Problem 61MSPP

Light that enters your eyes is focused to form an image on your retina. The optics of your visual system have a total refractive power of about +60 D - about +20 D from the lens in your eye and + 40 D from the curved shape of your cornea. Surgical procedures to correct vision generally do not work on the lens; they work to reshape the cornea. In the most common procedure, a laser is used to remove tissue from the center of the cornea, reducing its curvature. This change in shape can correct certain kinds of vision problems.

61. The length of your eye decreases slightly as you age, making the lens a bit closer to the retina. Suppose a man had his vision surgically corrected at age 30. At age 70, once his eyes had decreased slightly in length, he would be

A. Nearsighted.

B. Farsighted.

C. Neither nearsighted nor farsighted.

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Chapter 19, Problem 60MSPP

Chapter 20, Problem 1CQ

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Chapter 19 Solutions

College Physics: A Strategic Approach (3rd Edition)

Ch. 19 - On a sunny summer day, with the sun overhead, you...Ch. 19 - Suppose you have two pinhole cameras. The first...Ch. 19 - A photographer focuses his camera on his subject....Ch. 19 - The object for a magnifier is usually placed very...Ch. 19 - A nature photographer taking a close-up shot of an...Ch. 19 - The CCD detector in a certain camera has a width...Ch. 19 - All humans have what is known as a blind spot,...Ch. 19 - Suppose you wanted special glasses designed to...Ch. 19 - You have lenses with the following focal lengths:...Ch. 19 - An 8-year-old child and a 75-year-old man both use...

Ch. 19 - A friend lends you the eyepiece of his microscope...Ch. 19 - An astronomer is using a telescope to observe two...Ch. 19 - A student makes a microscope using an objective...Ch. 19 - Is the wearer of the glasses in Figure Q19.14...Ch. 19 - Prob. 15CQ Ch. 19 - A collector notices a rare beetle on a tree 1.0 m...Ch. 19 - A microscope has a tube length of 20 cm. What...Ch. 19 - The distance between the objective and eyepiece of...Ch. 19 - A nearsighted person has a near point of 20 cm and...Ch. 19 - A nearsighted person has a near point of 20 cm and...Ch. 19 - A 60-year-old man has a near point of 100 cm,...Ch. 19 - A person looking through a 10 D lens sees an image...Ch. 19 - Prob. 23MCQ Ch. 19 - An amateur astronomer looks at the moon through a...Ch. 19 - Prob. 1P Ch. 19 - A student has built a 20-cm-long pinhole camera...Ch. 19 - A pinhole camera is made from an 80-cm-long box...Ch. 19 - A photographer uses his camera, whose lens has a...Ch. 19 - An older camera has a lens with a focal length of...Ch. 19 - In Figure P19.6 the camera lens has a 50 mm focal...Ch. 19 - a. Estimate the diameter of your eyeball. b. Bring...Ch. 19 - A farsighted person has a near point of 50 cm...Ch. 19 - A nearsighted woman has a far point of 300 cm....Ch. 19 - Martin has severe myopia, with a far point of only...Ch. 19 - Mary, like many older people, has lost all ability...Ch. 19 - Prob. 12P Ch. 19 - Prob. 13P Ch. 19 - Rank the following people from the most...Ch. 19 - The diameter of a penny is 19 mm. How far from...Ch. 19 - A magnifier has a magnification of 4 for someone...Ch. 19 - A magnifier has a magnification of 5. How far from...Ch. 19 - A farsighted man has a near point of 40 cm. What...Ch. 19 - An inexpensive microscope has a tube length of...Ch. 19 - A standard biological microscope is required to...Ch. 19 - A forensic scientist is using a standard...Ch. 19 - A microscope with an 8.0-mm-focal-length objective...Ch. 19 - The distance between the objective and eyepiece...Ch. 19 - For the combination of two identical lenses shown...Ch. 19 - For the combination of two lenses shown in Figure...Ch. 19 - A researcher is trying to shoot a tranquilizer...Ch. 19 - The objective lens of the refracting telescope at...Ch. 19 - You use your 8 binoculars to focus on a...Ch. 19 - Your telescope has a 700-mm-focal-length objective...Ch. 19 - A narrow beam of light with wavelengths from 450...Ch. 19 - Prob. 31P Ch. 19 - A ray of red light, for which n = 1.54, and a ray...Ch. 19 - Two lightbulbs are 1.0 m apart. From what distance...Ch. 19 - A 1.0-cm-diameter microscope objective has a focal...Ch. 19 - A microscope with an objective of focal length 1.6...Ch. 19 - Suppose you point a pinhole camera at a 15-m-tall...Ch. 19 - Jason uses a lens with a focal length of 10.0 cm...Ch. 19 - A magnifier is labeled 5. What would its...Ch. 19 - A 20 microscope objective is designed for use in...Ch. 19 - Two converging lenses with focal lengths of 40 cm...Ch. 19 - A converging lens with a focal length of 40 cm and...Ch. 19 - A lens with a focal length of 25 cm is placed 40...Ch. 19 - A microscope with a 5 objective lens images a...Ch. 19 - Prob. 44GP Ch. 19 - A 20 objective and 10 eyepiece give an angular...Ch. 19 - The objective lens and the eyepiece lens of a...Ch. 19 - Your telescope has an objective lens with a focal...Ch. 19 - Martha is viewing a distant mountain with a...Ch. 19 - Susan is quite nearsighted; without her glasses,...Ch. 19 - A spy satellite uses a telescope with a...Ch. 19 - Two stars have an angular separation of 3.3 105...Ch. 19 - Frank is nearsighted and his glasses require a...Ch. 19 - What is the angular resolution of the Hubble Space...Ch. 19 - The Hubble Space Telescope has a mirror diameter...Ch. 19 - Once dark adapted, the pupil of your eye is...Ch. 19 - The normal human eye has maximum visual acuity...Ch. 19 - Prob. 57GP Ch. 19 - Light that enters your eyes is focused to form an...Ch. 19 - Light that enters your eyes is focused to form an...Ch. 19 - Light that enters your eyes is focused to form an...Ch. 19 - Light that enters your eyes is focused to form an...

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