Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Chapter 38, Problem 64PQ
To determine
The near point of a person's eye using a ruler and a coin and compare it with the typical value of near point. The focal length of each eye lens when the person focus on an object at his near point.
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For the following problems, find the image distance, image height, and the magnification using ray tracing
and thin lens equation methods. In ray tracing, describe the image. [Use same scale as the sample
problems and use graphing paper for the ray tracing.]
1. An object 4.0 cm high is placed 20 cm in front of a concave lens of focal length 60 cm.
Shown in the figure below is a system containing two lenses and an object. The focal lengths of the two lenses are f₁ = 17 cm and f₂ = -8.5 cm. The two lengths
indicated in the figure are L₁ = 25.5 cm and L2 = 13.6 cm.
41
f1
L₂
f2
Determine all the following about the image from the first lens only:
Object distance for the first lens, do1.
Image distance for the first lens, di1.
cm
cm
Magnification of the first lens, m1.
The second lens uses the image from the first lens as its object. Determine all the following about the image from the second lens:
Object distance for the second lens, do1.
Image distance for the second lens, di1.
cm
cm
Magnification of the second lens, m₁.
Determine the magnification of the whole system, mtot
Select the correct attributes of the final image of the system:
O real
○ virtual
enlarged
O shrunk
O right side up
O upside down
NOTE: Throughout the problem be careful with the sign of every quantity.
A 1.5-cm-tall object is 13 cm in front of a converging
lens that has a 32 cm focal length.
For help with math skills, you may want to review:
Rearrangement of Equations Involving Multiplication
and Division
For general problem-solving tips and strategies for
this topic, you may want to view a Video Tutor
Solution of Using a lens to make an image.
Part A
Calculate the image position.
Express your answer with the appropriate units.
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Request Answer
Part B
Calculate the image height
Express your answer with the appropriate units.
h'= Value
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Request Answer
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Chapter 38 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 38.1 - Light travels from air into glass. Which sketch in...Ch. 38.2 - Prob. 38.2CECh. 38.3 - Prob. 38.3CECh. 38.6 - Prob. 38.4CECh. 38.7 - Prob. 38.5CECh. 38.9 - Prob. 38.6CECh. 38.9 - Prob. 38.7CECh. 38.10 - Prob. 38.8CECh. 38 - The Sun appears at an angle of 53.0 above the...Ch. 38 - Prob. 2PQ
Ch. 38 - Prob. 3PQCh. 38 - A light ray is incident on an interface between...Ch. 38 - Prob. 5PQCh. 38 - Prob. 6PQCh. 38 - Prob. 7PQCh. 38 - A ray of light enters a liquid from air. If the...Ch. 38 - Prob. 9PQCh. 38 - Figure P38.10 on the next page shows a...Ch. 38 - Prob. 11PQCh. 38 - Prob. 12PQCh. 38 - Prob. 13PQCh. 38 - Prob. 14PQCh. 38 - Prob. 15PQCh. 38 - A fish is 3.25 m below the surface of still water...Ch. 38 - N A fish is 3.25 m below the surface of still...Ch. 38 - A beam of monochromatic light within a fiber optic...Ch. 38 - Prob. 19PQCh. 38 - Prob. 20PQCh. 38 - Consider a light ray that enters a pane of glass...Ch. 38 - Prob. 22PQCh. 38 - Prob. 23PQCh. 38 - Prob. 24PQCh. 38 - Prob. 25PQCh. 38 - Prob. 26PQCh. 38 - Prob. 27PQCh. 38 - Prob. 28PQCh. 38 - The wavelength of light changes when it passes...Ch. 38 - Prob. 30PQCh. 38 - Light is incident on a prism as shown in Figure...Ch. 38 - Prob. 32PQCh. 38 - Prob. 33PQCh. 38 - Prob. 34PQCh. 38 - Prob. 35PQCh. 38 - Prob. 36PQCh. 38 - Prob. 37PQCh. 38 - A Lucite slab (n = 1.485) 5.00 cm in thickness...Ch. 38 - Prob. 39PQCh. 38 - Prob. 40PQCh. 38 - The end of a solid glass rod of refractive index...Ch. 38 - Prob. 42PQCh. 38 - Figure P38.43 shows a concave meniscus lens. If...Ch. 38 - Show that the magnification of a thin lens is...Ch. 38 - Prob. 45PQCh. 38 - Prob. 46PQCh. 38 - Prob. 47PQCh. 38 - The radius of curvature of the left-hand face of a...Ch. 38 - Prob. 49PQCh. 38 - Prob. 50PQCh. 38 - Prob. 51PQCh. 38 - Prob. 52PQCh. 38 - Prob. 53PQCh. 38 - Prob. 54PQCh. 38 - Prob. 55PQCh. 38 - Prob. 56PQCh. 38 - Prob. 57PQCh. 38 - Prob. 58PQCh. 38 - Prob. 59PQCh. 38 - Prob. 60PQCh. 38 - Prob. 61PQCh. 38 - Prob. 62PQCh. 38 - Prob. 63PQCh. 38 - Prob. 64PQCh. 38 - Prob. 65PQCh. 38 - Prob. 66PQCh. 38 - Prob. 67PQCh. 38 - Prob. 68PQCh. 38 - CASE STUDY Susan wears corrective lenses. The...Ch. 38 - A Fill in the missing entries in Table P38.70....Ch. 38 - Prob. 71PQCh. 38 - Prob. 72PQCh. 38 - Prob. 73PQCh. 38 - Prob. 74PQCh. 38 - An object 2.50 cm tall is 15.0 cm in front of a...Ch. 38 - Figure P38.76 shows an object placed a distance...Ch. 38 - Prob. 77PQCh. 38 - Prob. 78PQCh. 38 - Prob. 79PQCh. 38 - CASE STUDY A group of students is given two...Ch. 38 - A group of students is given two converging...Ch. 38 - Prob. 82PQCh. 38 - Two lenses are placed along the x axis, with a...Ch. 38 - Prob. 84PQCh. 38 - Prob. 85PQCh. 38 - Prob. 86PQCh. 38 - Prob. 87PQCh. 38 - Prob. 88PQCh. 38 - Prob. 89PQCh. 38 - Prob. 90PQCh. 38 - Prob. 91PQCh. 38 - Prob. 92PQCh. 38 - Prob. 93PQCh. 38 - Prob. 94PQCh. 38 - Prob. 95PQCh. 38 - Prob. 96PQCh. 38 - Prob. 97PQCh. 38 - A Fermats principle of least time for refraction....Ch. 38 - Prob. 99PQCh. 38 - Prob. 100PQCh. 38 - Prob. 101PQCh. 38 - Prob. 102PQCh. 38 - Prob. 103PQCh. 38 - Prob. 104PQCh. 38 - Curved glassair interfaces like those observed in...Ch. 38 - Prob. 106PQCh. 38 - Prob. 107PQCh. 38 - Prob. 108PQCh. 38 - Prob. 109PQCh. 38 - Prob. 110PQCh. 38 - Prob. 111PQCh. 38 - Prob. 112PQCh. 38 - Prob. 113PQCh. 38 - Prob. 114PQCh. 38 - The magnification of an upright image that is 34.0...Ch. 38 - Prob. 116PQCh. 38 - Prob. 117PQCh. 38 - Prob. 118PQCh. 38 - Prob. 119PQCh. 38 - Prob. 120PQCh. 38 - Prob. 121PQCh. 38 - Prob. 122PQCh. 38 - Prob. 123PQCh. 38 - Prob. 124PQCh. 38 - Prob. 125PQCh. 38 - Prob. 126PQCh. 38 - Light enters a prism of crown glass and refracts...Ch. 38 - Prob. 128PQCh. 38 - An object is placed a distance of 10.0 cm to the...
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- A lens with a focal length of 25 cm is placed 50 cm in front of a lens with a focal length of 5.0 cm. A. How far from the second lens is the final image of an object infinitely far from the first lens? Express your answer in centimeters. B. Is the image in Part A in front of or behind the second lens?arrow_forwardShown in the figure below is a system containing two lenses and an object. The focal lengths of the two lenses are f = 15 cm %3D and f, = -7.5 cm. The two lengths indicated in the figure are L, = 22.5 cm and L2 = 12 cm. f1 f2 L2 Determine all the following about the image from the first lens only: Object distance for the first lens, do1. cm Image distance for the first lens, di1. cm Magnification of the first lens, m1. The second lens uses the image from the first lens as its object. Determine all the following about the image from the second lens: Object distance for the second lens, do1. cm Image distance for the second lens, di1. cm Magnification of the second lens, m1. Determine the magnification of the whole system, mtot. Select the correct attributes of the final image of the system: O virtual O real O shrunk O enlarged right side up O upside downarrow_forwardAn object is 8 cm in front of a diverging lens with a focal length of -7 cm. You may want to review (Pages 973-978). Constants Part A Determine the location of the image. Express your answer to two significant figures and include the appropriate units. Ti μA Units s' = Value Submit Request Answerarrow_forward
- standardized biological microscope has an 8.0-mm-focal- length objective. You may want to review (Pages 1005 - 1007). Part A For help with math skills, you may want to review: Rearrangement of Equations Involving Multiplication and Division What focal-length eyepiece should be used to achieve a total magnification of 100x? Express your answer to two significant figures and include the appropriate units. For general problem-solving tips and strategies for this topic, you may want to view Video Tutor Solution of Magnifier. µA feye = Value Units Submit Request Answerarrow_forwardCourse # Section # Pre-lab The Focal length of a lens Read the manual 0-3 thoroughly. When an object is put in front of a thin lens, if the focal length of a lens is known, one can predict where the image will be formed by using the thin lens equation: Name 1 1 1 p q f where p is the object distance, q is the image distance, and fis the focal length. fis positive for a converging lens, and negative for a diverging lens. Refer to the figure below to answer the questions: A positive lens F 9= A negative lens -f 1. If an object is located very far from a converging lens, i.e. poo, where would its image be formed? 9= 2. If an object is located on the first focal point of a converging lens, i.e. p=f, where is its image formed? 9. = Is the image on the same side or opposite side of the lens as the object? 3. If an object is located on the second focal point of a diverging lens, i.e. p = f, where is its image formed? Is the image on the same side or opposite side of the lens as the object?arrow_forwardTo maximize the magnification of a telescope, what is the best combination of the focal lengths of the objective and eyepiece lenses? a. The focal length of the objective should be large, and the focal length of the eyepiece needs to be small b. The focal lengths of both the objective and eyepiece need to be small O c. The focal lengths of both the objective and eyepiece need to be large d. The focal length of the objective should be small, and the focal length of the eyepiece needs to be large Checkarrow_forward
- Please solve and answer the question correctly please. Also be sure to give the correct units. Thank you!!arrow_forwardImagine you were provided with a lens, lens holder, screen, sheet of paper, meter rule, clamp& stand, cross wires(object) and a touch light source. Identify the type of lens you have been provide with. Explain your answer Hence write down: two characteristics of the image formed the distance d of the image formed from the lens what is the significance of d? Justify your answerarrow_forwardProblem 6: Three positive lenses are arranged as shown below. The focal length of L, is 10 mm. The focal length of L2 is 10 mm. The focal length of L3 is 2 mm. A ray enters parallel to the axis as shown in red. Using graphical raytrace rules, draw the trajectory of that ray through the remainder of the system. The drawing is to scale. 2 mm 10 mm L1 L2 L3arrow_forward
- Part B (work to be submitted): 1. Sunlight is observed to focus at a point 18.5 cm behind a lens. a. What kind of lens is it? b. What is the focal length of the lens? 2. A sharp image is located 3 cm behind a converging lens with a 2 cm focal length. Find the distance from the object to the lens using the thin lens equation. 3. Using the definition of lateral magnification and geometrical considerations prove Equation 3 in this week's laboratory handout (page 4).arrow_forwardFor the following problems, find the image distance, image height, and the magnification using ray tracing and thin lens equation methods. In ray tracing, describe the image. [Use same scale as the sample problems and use graphing paper for the ray tracing.] 2. A 2.0 cm high object is placed 40 cm in front of a convex lens of focal length 20 cm.arrow_forwardAn object is placed 96.5 cmcm from a glass lens (nnn = 1.51) with one concave surface of radius 24 cmcm and one convex surface of radius 18.9 cmcm . Part A Determine the final image distance from the center of lens. Follow the sign conventions. Express your answer to two significant figures and include the appropriate units. Part B What is the magnification? Follow the sign conventions. Express your answer using two significant figures.arrow_forward
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