Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Chapter 37, Problem 2PQ
Because you should never stare directly into the Sun, pinhole cameras are very handy for observing solar eclipses. Come up with a simple, inexpensive design for a pinhole camera that you could use to observe an eclipse. Describe your design and how you would use the camera. A sketch may be helpful.
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Students have asked these similar questions
a.) Draw a simple version of the human eye looking at the sun (never look at the sun yourself!), showing the lens and the retina. Label s, s’, and f.
b.) If the distance between the lens and the retina is around 2 cm, relabel s, s’, and f with their exact distances.
c.) Why do we need a lens in the eye to view distant objects?
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).
A camera lens used for taking close-up photographs has a focal length of 24.9 mm. The farthest it can be placed from the film is 33.4 mm.
a. What is the closest object that can be photographed?
mm
b. What is the magnification of this closest object?
X
Chapter 37 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 37.2 - A beam in air strikes a glass ball as shown in...Ch. 37.3 - Prob. 37.2CECh. 37.4 - Prob. 37.3CECh. 37.4 - Prob. 37.4CECh. 37.6 - Prob. 37.5CECh. 37.6 - Prob. 37.6CECh. 37.6 - Prob. 37.7CECh. 37 - A camera obscura is used to form an image of a...Ch. 37 - Because you should never stare directly into the...Ch. 37 - Prob. 3PQ
Ch. 37 - Prob. 4PQCh. 37 - Prob. 5PQCh. 37 - Prob. 6PQCh. 37 - Prob. 7PQCh. 37 - Prob. 8PQCh. 37 - Prob. 9PQCh. 37 - Prob. 10PQCh. 37 - Prob. 11PQCh. 37 - Prob. 12PQCh. 37 - Prob. 13PQCh. 37 - Prob. 14PQCh. 37 - Light rays strike a plane mirror at an angle of...Ch. 37 - Prob. 16PQCh. 37 - Prob. 17PQCh. 37 - Prob. 18PQCh. 37 - Prob. 19PQCh. 37 - Prob. 20PQCh. 37 - Prob. 21PQCh. 37 - Prob. 22PQCh. 37 - Prob. 23PQCh. 37 - Prob. 24PQCh. 37 - Prob. 25PQCh. 37 - Prob. 26PQCh. 37 - Prob. 27PQCh. 37 - Prob. 28PQCh. 37 - A convex mirror with a radius of curvature of 25.0...Ch. 37 - The magnitude of the radius of curvature of a...Ch. 37 - Prob. 31PQCh. 37 - The image formed by a convex spherical mirror with...Ch. 37 - An object is placed 25.0 cm from the surface of a...Ch. 37 - Prob. 34PQCh. 37 - Prob. 35PQCh. 37 - Prob. 36PQCh. 37 - Prob. 37PQCh. 37 - Prob. 38PQCh. 37 - Prob. 39PQCh. 37 - Prob. 40PQCh. 37 - Prob. 41PQCh. 37 - Prob. 42PQCh. 37 - Prob. 43PQCh. 37 - Prob. 44PQCh. 37 - Prob. 45PQCh. 37 - Prob. 46PQCh. 37 - Prob. 47PQCh. 37 - Prob. 48PQCh. 37 - Prob. 49PQCh. 37 - Prob. 50PQCh. 37 - Prob. 51PQCh. 37 - Prob. 52PQCh. 37 - Prob. 53PQCh. 37 - Prob. 54PQCh. 37 - Prob. 55PQCh. 37 - Prob. 56PQCh. 37 - You see the image of a sign through a camera...Ch. 37 - Prob. 58PQCh. 37 - Prob. 59PQCh. 37 - Prob. 60PQCh. 37 - An object is placed midway between two concave...Ch. 37 - Prob. 62PQCh. 37 - Prob. 63PQCh. 37 - Prob. 64PQCh. 37 - Prob. 65PQCh. 37 - Prob. 66PQCh. 37 - Observe your reflection in the back of a spoon....Ch. 37 - Prob. 68PQCh. 37 - A small convex mirror and a large concave mirror...Ch. 37 - Prob. 70PQCh. 37 - Prob. 71PQCh. 37 - Prob. 72PQCh. 37 - Prob. 73PQ
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- Problem 99. A) How is a good single-lens camera (one that can be "focused") able to take clear pictures of objects that are a variety of distances from the camera? B) How is the eye able to place clear images on the retina of objects that are a variety of distances from the eye? C) For a fixed focus camera to take clear pictures, the object distance must satisfy a certain inequality. What is this inequality? D) Why does the nearpoint increase as people age?arrow_forwardA measurement indicates that a patient cannot clearly see any object that lies closer than 60.2 cm to the patient's eye. 1.) The patient needs to be able to clearly see objects that are just 27.0 cm distant. A contact lens is called for. What focal length (in cm) should this lens have? Assume the lens can be modeled as an ideal thin lens, which lies adjacent to the eye. 2.) What is the power, P, of the contact lens (in diopters)?arrow_forwardYou want to decrease the exposure time for a camera. To get a good exposure what else do you need to change and how should you change it? Explain.arrow_forward
- The focal length of a simple lens depends on the color (wavelength) of light passing through it. Why? Is it possible for a lens to have a positive focal length for some colors and negative for others? Explain.arrow_forwardAn object is placed to the left of a concave lens with focal length -10 cm such that the image produced by the lens is exactly half the size of the object. In a neat and organized fashion, write out a solution which includes the following: A sketch of the physical situation with all given physical quantities clearly labeled. Draw a ray diagram showing the object, the lens, and the image. Determine the location of the object and the image. Clearly show all steps, starting from generalized equations. Explain your mathematical work in words. Your explanation should cover both what you did and the thought process behind why you did that. Evaluate your answer to determine whether it is reasonable or not. Consider all aspects of your answer (the numerical value, sign, and units) in your evaluation. Please answer 1 and 2 only and thanksarrow_forwardAn object is placed to the left of a concave lens with focal length -10 cm such that the image produced by the lens is exactly half the size of the object. In a neat and organized fashion, write out a solution which includes the following: A sketch of the physical situation with all given physical quantities clearly labeled. Draw a ray diagram showing the object, the lens, and the image. Determine the location of the object and the image. Clearly show all steps, starting from generalized equations. Explain your mathematical work in words. Your explanation should cover both what you did and the thought process behind why you did that. Evaluate your answer to determine whether it is reasonable or not. Consider all aspects of your answer (the numerical value, sign, and units) in your evaluation. Answer all questions from 1-4 In 1 make sure the physical situation is sketch and label In 2 make sure the ray diagram is draw In 4 why the answer is reasonablearrow_forward
- An object is placed to the left of a concave lens with focal length -10 cm such that the image produced by the lens is exactly half the size of the object. In a neat and organized fashion, write out a solution which includes the following: A sketch of the physical situation with all given physical quantities clearly labeled. Draw a ray diagram showing the object, the lens, and the image. Determine the location of the object and the image. Clearly show all steps, starting from generalized equations. Explain your mathematical work in words. Your explanation should cover both what you did and the thought process behind why you did that. Evaluate your answer to determine whether it is reasonable or not. Consider all aspects of your answer (the numerical value, sign, and units) in your evaluation. Answer 4 only pleasearrow_forward1. An amateur astronomer has a telescope to examine distant stars and nebulae. The focal length of the main objective lens of the telescope is f= 710 mm. At what distance from the lens will a distant star be imaged using this objective lens? Give your answer in units of metres.arrow_forwardThe Sun has diameter 1.4 x 106 km, and it is 1.5 x 108 km away. ▼ Part A How large is the image of the Sun on film used in a camera with a 28-mm-focal-length lens? Express your answer using two significant figures and include the appropriate units. |h₁|= 0.26 mm Submit ✓ Correct Part B Previous Answers How large is the image of the Sun on film used in a camera with a 50-mm-focal-length lens? Express your answer using two significant figures and include the appropriate units. |hi| = 0.47 mm Submit Previous Answers ✓ Correct Part C How large is the image of the Sun on film used in a camera with a 145-mm-focal-length lens? Express your answer using two significant figures and include the appropriate units. |h₁|= 1.35 mm Submit Previous Answers ✓ Correct Part D If the 50-mm lens is considered normal for this camera, what relative magnification does each of the other t Express your answers using two significant figures separated by a comma. VG] ΑΣΦ | M28 mm relative; M145 mm relative…arrow_forward
- 1. You have a thin lens of focal length 50 mm. a. The object is 100 mm to the left of the lens. Where is the image located (that is, what is the image distance q, including sign - express in millimeters)? Is the image real or virtual? What is the magnification? b. The object is 1 meter to the left of the lens. Where is the image located (that is, what is the image distance q, including sign - express in millimeters)? Is the image real or virtual? What is the magnification? c. The object is 20 mm to the left of the lens. Where is the image located (that is, what is the image distance q, including sign - express in millimeters)? Is the image real or virtual? What is the magnification?arrow_forwardIn a compound microscope, the objective lens and eyepiece have focal lengths of +0.50 cm and +4.5 cm respectively. The real image formed by the objective lens is 7 cm from the objective. Find the following: A. What is the linear magnification of the objective lens? B. What is the magnifying power of the eyepiece? C. What is the magnifying power of the instrument? D. The distance between the eyepiece and final image is 25.0 cm. What is the distance of the eyepiece to the image due to the objective lens?arrow_forwardA 1.38 m-long Galilean telescope has an eyepiece lens with focal length -4.58 cm. Determine the lens power of the telescope. Give your answer in m-1, correct to 2d.p. The answer is NOT 0.70 or 0.75arrow_forward
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