College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
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Chapter 23, Problem 90RPP
To determine
The similarity between a fish eye and a human eye.
a. The muscles attached to the lenses change their shape.
b. The corneas help focus the light.
c. The lenses have a spherical shape.
d. The iris helps focus the light.
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Students have asked these similar questions
Often people with lens-to-retina distances smaller than 2 cm purchase glasses to place in front of their eyes.
a. Explain why people with lens-to-retina distances smaller than 2 cm need glasses.
b. Explain whether the glasses should be composed of converging or diverging lenses.
c. Draw a ray diagram demonstrating the ability to see with and without the glasses.
Optics The equation
1-1+1
=
f
р
sometimes called a lens-maker's equation, gives the relationship between the focal length f of a thin lens, the distance p of the object from the lens, and the distance q of its image from the lens.
We can think of the eye as an optical system in which the ciliary muscle constantly adjusts the curvature of the cornea-lens system to focus the image on the retina. Assume that the distance from the
cornea to the retina is 2.5 cm, as shown in the figure below.
Object
Image
2.5 cm
(a) Find the focal length of the cornea-lens system if an object located 56 cm away is to be focused on the retina. (Round your answer to two decimal places.)
cm
(b) What is the rate of change of the focal length with respect to the distance of the object when the object is 56 cm away? (Round your answer to five decimal places.)
cm/cm
0: Images
Еyes
Acuvity
Our eyes use a biconvex lens behind our pupil to focus incoming light into images on the retina at the
back of our eyes. Human eyes have a diameter of approximately 2.5 cm on average. Imagine a 1.8 m tall
person stands 2 m away from you.
1.8 m
2.0 m
0.025m
*Image not drawn to scale
18
Draw a ray diagram showing how the light coming from this person passes through the lens in your eye
and produces an image on your retina.
Chapter 23 Solutions
College Physics
Ch. 23 - Review Question 23.1 A mirror is hanging on a...Ch. 23 - Review Question 23.2 You've found a concave...Ch. 23 - Review Question 23.3 You place a concave mirror on...Ch. 23 - Review Question 23.5 Where should you place an...Ch. 23 - Review Question 23.6 If we have a mathematical...Ch. 23 - Review Question 23.7 What is the main difference...Ch. 23 - Review Question 23.8 If a person with normal...Ch. 23 - Review Question 23.9 Why is saying that a...Ch. 23 - Where does the image of an object in a plane...Ch. 23 - Where does the image of an object that is s meters...
Ch. 23 - 3. A plane mirror produces an image of an object...Ch. 23 - A concave mirror can produce an image that is...Ch. 23 - 5. A convex mirror can produce an image that is...Ch. 23 - 6. A virtual image is the image produced
a. on as...Ch. 23 - 7. To see an image of an object that is enlarged,...Ch. 23 - To see an image of an object that is enlarged,...Ch. 23 - Prob. 9MCQCh. 23 - 10. When drawing images of objects produced by...Ch. 23 - 11. The focal length of a glass lens is 10 cm....Ch. 23 - 12. A microbiologist uses a microscope to look at...Ch. 23 - 13. The human eye works in a similar way to which...Ch. 23 - Which of the following changes will result in a...Ch. 23 - When we draw a ray passing through the center of a...Ch. 23 - 16. You run toward a building with walls of a...Ch. 23 - 17. A tiny plane mirror can produce an image...Ch. 23 - Explain how we derived the mirror equation.Ch. 23 - 19. Explain how we derived the thin lens...Ch. 23 - Explain the difference between a real and a...Ch. 23 - You stand in front of a fun house mirror. You see...Ch. 23 - 22. A bubble of air is suspended underwater. Draw...Ch. 23 - 23. A bubble of oil is suspended in water. Draw...Ch. 23 - A typical person underwater cannot focus clearly...Ch. 23 - In a video projector, the picture that appears on...Ch. 23 - The retina has a blind spot at the place where the...Ch. 23 - You need to teach your friend how to draw rays to...Ch. 23 - Place a pencil in front of a plane mirror so that...Ch. 23 - 3.* Use geometry to prove that the virtual image...Ch. 23 - * You are 1.8 m tall. Where should you place the...Ch. 23 - 5. * Two people are standing in front of a...Ch. 23 - 6. * Test an idea Describe an experiment that you...Ch. 23 - * Describe in detail an experiment to find the...Ch. 23 - * Explain with a ray diagram how (a) a concave...Ch. 23 - 9. * Test an idea Describe an experiment to test...Ch. 23 - * Test an idea Describe an experiment to test the...Ch. 23 - 11. * Tablespoon mirror You look at yourself in...Ch. 23 - * Use ray diagrams and the mirror equation to...Ch. 23 - Repeat Problem 23.12 for a convex mirror of focal...Ch. 23 - 14. Use ray diagrams and the mirror equation to...Ch. 23 - 15. * Sinking ships A legend says that Archimedes...Ch. 23 - 16. * EST Fortune-teller A fortune-teller looks...Ch. 23 - * You view yourself in a large convex mirror of...Ch. 23 - * Seeing the Moon in a mirror The Moons diameter...Ch. 23 - 19. * You view your face in a +20-cm focal length...Ch. 23 - 20. * Buying a dental mirror A dentist wants to...Ch. 23 - * Using a dental mirror A dentist examines a tooth...Ch. 23 - * If you place a point-like light source on the...Ch. 23 - 24. * You have a convex lens and a candle....Ch. 23 - 25. * Explain how to draw ray diagrams to locate...Ch. 23 - * Draw ray diagrams to show how a convex lens can...Ch. 23 - 27. * Use a ruler to draw ray diagrams to locate...Ch. 23 - 28. * Repeat the procedure described in Problem...Ch. 23 - 29. * Repeat the procedure described in Problem...Ch. 23 - 30 * Repeat the procedure in Problem 23.27 for the...Ch. 23 - * Partially covering lens Your friend thinks that...Ch. 23 - * Use ray diagrams to locate the images of the...Ch. 23 - 33. *Use ray diagrams to locate the images of the...Ch. 23 - Light passes through a narrow slit, and then...Ch. 23 - * Describe two experiments that you can perform to...Ch. 23 - * Shaving/makeup mirror You wish to order a mirror...Ch. 23 - 37. Dentist lamps Dentists use special lamps that...Ch. 23 - 38. * A large concave mirror of focal length 3.0m...Ch. 23 - 39 * EST Two convex mirrors on the side of a van...Ch. 23 - Camera You are using a camera with a lens of focal...Ch. 23 - 42. * Camera A camera with an 8.0-cm focal length...Ch. 23 - Video projector An LCD video projector (LCD stands...Ch. 23 - Photo of carpenter ant You take a picture of a...Ch. 23 - * Photo of secret document A secret agent uses a...Ch. 23 - 46. * Photo of landscape To photograph a landscape...Ch. 23 - * Make a rough graph of image distance versus...Ch. 23 - * Make a rough graph of linear magnification...Ch. 23 - * Repeat Problem 23.48 for a concave lens of...Ch. 23 - BIO Eye The image distance for the lens of a...Ch. 23 - BIO Lens-retina distance Fish and amphibians...Ch. 23 - BIO Nearsighted and farsighted (a) A woman can...Ch. 23 - * BIO Prescribe glasses A man who can produce...Ch. 23 - 54. * BIO Correcting vision A woman who produces...Ch. 23 - 55. * BIO Where are the far and near points? (a) A...Ch. 23 - * BIO Age-related vision changes A 35-year-old...Ch. 23 - 5.7 Looking at an aphid You examine an aphid on a...Ch. 23 - 58. * Reading with a magnifying glass You examine...Ch. 23 - 59. * Seeing an image with a magnifying glass A...Ch. 23 - * Stamp collector A stamp collector is viewing a...Ch. 23 - * You place a +20-cm focal length convex lens at a...Ch. 23 - 62. * You place a +25-cm focal length convex lens...Ch. 23 - * EST You place a candle 10 cm in front of a...Ch. 23 - 64. * EST Repeat Problem 23.63 for an object...Ch. 23 - ** You measure the focal length of a concave lens...Ch. 23 - 66.** Telescope A telescope consists of a +4.0-cm...Ch. 23 - 67. ** Yerkes telescope The world’s largest...Ch. 23 - * Telescope A telescope consisting of a +3.0-cm...Ch. 23 - 69. *** Design a telescope You are marooned on a...Ch. 23 - * Microscope A microscope has a +0.50-cm objective...Ch. 23 - 71. ** BIO Dissecting microscope A dissecting...Ch. 23 - *** Microscope A microscope has an objective lens...Ch. 23 - 73. ** Microscope Determine the lens separation...Ch. 23 - * Figure P23.75 shows three cases of the primary...Ch. 23 - Prob. 78GPCh. 23 - ** Two-lens camera A two-lens camera (see Figure...Ch. 23 - **You have a small spherically shaped bottle made...Ch. 23 - BIO Find a farsighted person. Design an experiment...Ch. 23 - 82. BIO Find a nearsighted person. Design an...Ch. 23 - BIO Laser surgery for the eye LASIK...Ch. 23 - BIO Laser surgery for the eye LASIK...Ch. 23 - BIO Laser surgery for the eye LASIK...Ch. 23 - BIO Laser surgery for the eye LASIK...Ch. 23 - BIO Laser surgery for the eye LASIK...Ch. 23 - BIO Laser surgery for the eye LASIK...Ch. 23 - Prob. 89RPPCh. 23 - Prob. 90RPPCh. 23 - Prob. 91RPPCh. 23 - Prob. 92RPPCh. 23 - Prob. 93RPP
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