3. Figure 2.2 is a photograph of an eyeball with the image of a boy in a doorway. Is the eye here acting as a lens or as a mirror? Explain. 6. A stamp collector uses a converging lens with focal length 28 cm to view a stamp 16 cm in front of the lens. (a)Where is the image located? (b) What is the magnification? Figure 2.1 Problem 2 Figure 2.2 Problem 3 137

3. Figure 2.2 is a photograph of an eyeball with the image of a boy in a doorway. Is the eye here acting as a lens or as a mirror? Explain. 6. A stamp collector uses a converging lens with focal length 28 cm to view a stamp 16 cm in front of the lens. (a)Where is the image located? (b) What is the magnification? Figure 2.1 Problem 2 Figure 2.2 Problem 3 137

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter26: Image Formation By Mirrors And Lenses

Section: Chapter Questions

Problem 7OQ: A converging lens made of crown glass has a focal length of 15.0 cm when used in air. If the lens is...

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A converging lens made of crown glass has a focal length of 15.0 cm when used in air. If the lens is immersed in water, what is its focal length? (a) negative (b) less than 15.0 cm (c) equal to 15.0 cm (d) greater than 15.0 cm (e) none of those answers
1. 2. 3. What is the focal length of -4.50 D lens? Where is the focal point in the above lens and is it in front of or behind the lens? Would the image in the above lens be real or virtual?
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?
A convex lens is set up on a table. On one side is an illuminated object of size 8 cm that is 41 cm from the lens. The focal length of the lens is 9 cm. 1. Where will the image be located, i.e. q (in cm)? 2. What will be the magnification? 3. Will the image be real or inverted? 4. Will the image be upright or inverted? 5. What will be the size of the image. In canvas, write only the magnitude of the size in cm. For a convex lens, 'p' and 'f' are positive.
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Forrest and Jevin are experimenting with lenses. They have two double convex, 10 cm focal length lenses. They place the two lenses 10 cm apart from each other. They place an object 15 cm to the left of the f first lens. 1. What is the location of the final image produced by the combination of the lenses?Measure the distance in cm from the center of the first lens. Distance = cm 2. If the height of the object places in front of the lenses is 2 cm, what is the height of the image? make sure to include a negative in front of your answer if the image is inverted. Height of image: cm. < Previous Next ▸ tv N F4 80 F3 $ 4 R % 5 F5 T A 6 MacBook Air F6 Y & 7 F7 U * 8 DII F8 1 A C F9 9
Shown in the figure below is a system containing two lenses and an object. The focal lengths of the two lenses are f₁ = -15 cm and f₂ = 7.5 cm. The two lengths indicated in the figure are L₁ = 22.5 cm and L₂ = 12 cm. 4₁ f₁ f₂ 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, d¡1. Magnification of the first lens, m₁. cm 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, d¡₁. Magnification of the second lens, m₁. Determine the magnification of the whole system, mtot. cm Select the correct attributes of the final image of the system: O virtual O real O shrunk O enlarged O right side up O upside down NOTE: Throughout the problem be careful with the sign of every quantity.
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An object is placed 40 cm in front of a thin lens. If an image forms at a distance 120 cm from the lens, on the same side as the object, what is the focal length of the lens, in cm? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
1. The figure shows a converging lens with a focal length of 2cm. An object is 5cm to the left of the lens and is 2cm tall. d = ho h₂ = object MIEN ECHICHTE b. Find the magnification of the image. c. Find the height h; of the image. d. Is this a real or a virtual image? converging lens CIMIE CINE ES a. Fill in the blanks above, and use the lens equation to find d, the image-to-lens distance. www ***** e. Draw the image above at the correct location and with the correct size & orientation.