COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Question
Chapter 24, Problem 72QAP
To determine
(a)
The image distance and lateral magnification
To determine
(b)
To draw the ray diagram.
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Example 23-9 : Image formed by a converging lens. What are (a) the position, and (b) the size, of the image of a 7.6-cm-high leaf placed 1.00 m from a +50.0-mm-focal-length camera lens?
A clerk at the local grocery store wears glasses that make her
eyes look smaller than they actually are. Is the clerk nearsighted or
farsighted? Explain.
If a lens is immersed in water, its focallength changes, as discussed in Conceptual Example 26-17.(a) If a spherical mirror is immersed in water, does its focal lengthincrease, decrease, or stay the same? (b) Choose the best explanation from among the following:I. The focal length will increase because the water will causemore bending of light.II. Water will refract the light. This, combined with the reflection due to the mirror, will result in a decreased focal length.III. The focal length stays the same because it depends on thefact that the angle of incidence is equal to the angle of reflection for a mirror. This is unaffected by the presence of thewater
Chapter 24 Solutions
COLLEGE PHYSICS
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- Can an image be larger than the object even though its magnification is negative? Explain.arrow_forwardWill the focal length of a lens change when it is submerged in water? Explain.arrow_forwardWhat is the focal length of a makeup mirror that produces a magnification of 1.50 when a person’s face is 12.0 cm away? Explicitly show how you follow the steps in the ProblemSolving Strategy for Mirrors.arrow_forward
- During LASIK eye surgery (laser-assisted in situ keratomileusis), the shape of the cornea is modified by vaporizing some of its material. If the surgery is performed to correct for nearsightedness, how does the cornea need to be reshaped?arrow_forwardIn Example 25.7, the magnification of a book held 7.50 cm from a 10.0 cm focal length lens was found to be 3.00. (a) Find the magnification for the book when it is held 8.50 cm from the magnifier. (b) Do the same for when it is held 9.50 cm from the magnifier. (c) Comment on the trend in m as the object distance increases as in these two calculations.arrow_forward(a) What is the focal length of a magnifying glass that produces a magnification of 3.00 when held 5.00 cm from an object such as a rare coin? (b) Calculate the power of the magnifier in diopters. (c) Discuss how this power compares to those for store-bought reading glasses (typically 1.0 to 4.0 D). Is the magnifier's power greater, and should it be?arrow_forward
- A laboratory (astronomical) telescope is used to view a scale that is 300 cm from the objective, which has a focal length of 20.0 cm; the eyepiece has a focal length of 2.00 cm. Calculate the angular magnification when the telescope is adjusted for minimum eyestrain. Note: The object is not at infinity, so the simple expression m = fo/fe is not sufficiently accurate for this problem. Also, assume small angles, so that tan = .arrow_forwardA laboratory (astronomical) telescope is used to view a scale that is 300 cm from the objective, which has a focal length of 20.0 cm; the eyepiece has a focal length of 2.00 cm. Calculate the angular magnification when the telescope is adjusted for minimum eyestrain. Note: The object is not at infinity, so the simple expression m = fo/fe is not sufficiently accurate for this problem. Also, assume small angles, so that tan = .arrow_forwardThe accommodation limits for Nearsighted Nicks eyes are 18.0 cm and 80.0 cm. When he wears his glasses, he is able to see faraway objects clearly. At what minimum distance is he able to see objects clearly?arrow_forward
- Can a case 1 image be larger than the object even though its magnification is always negative? Explain.arrow_forwardUnreasonable Results A boy has a near point of 50 cm and a far point of 500 cm. Will a —4.00 D lens correct his far point to infinity?arrow_forwardUnreasonable Results Your friends show you an image 1hrough a microscope. They tell you that the microscope has an objective with a 0.500 cm focal length and an eyepiece with a 5.00 cm focal laugh. The resulting overall magnification is 250,000. Are 1hese viable values for a microscope?arrow_forward
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Convex and Concave Lenses; Author: Manocha Academy;https://www.youtube.com/watch?v=CJ6aB5ULqa0;License: Standard YouTube License, CC-BY