COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 24, Problem 95QAP
To determine
Calculate prescribed the correct power of the lens.
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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
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eyes look smaller than they actually are. Is the clerk nearsighted or
farsighted? Explain.
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Chapter 24 Solutions
COLLEGE PHYSICS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A cataract-impaired lens in an eye may be surgically removed and replaced by a manufactured lens. The focal length required for the new lens is determined by the lens-lo-retina distance, which is measured by a sonar-like device, and by the requirement that the implant provide for correct distance vision. (a) If the distance from lens to retina is 22.4 mm, calculate the power of the implanted lens in diopters. (b) Since there is no accommodation and the implant allows for correct distance vision, a corrective lens for close work or reading must be used. Assume a reading distance of 33.0 cm, and calculate the power of the lens in the reading glasses.arrow_forwardCan 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_forward
- What 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_forwardWhere must the film be placed if a camera lens is to make asharp image of an object far away? Explain.arrow_forwardA friend lends you the eyepiece of his microscope to use on your own microscope. He claims that since his eyepiece has the same diameter as yours but twice the focal length, the resolving power of your microscope will be doubled. Is his claim valid? Explain.arrow_forward
- Unreasonable 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_forwardExplain why an object in water always appears to be at a depth shallower than it actually is?arrow_forwardExample 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?arrow_forward
- If the cornea is to be reshaped (this can be done surgically or with contact lenses) to correct (short sight) myopia, should its curvature be made greater or smaller? Explain.arrow_forwardA near-sighted person might correct his vision by wearing diverging lenses with focal length f� = -40 cmcm . When wearing his glasses, he looks not at actual objects but at the virtual images of those objects formed by his glasses. Suppose he looks at a 13-cmcm-long pencil held vertically 1.5 mm from his glasses. Use ray tracing to determine the location of the image. Express your answer with the appropriate units. Enter positive value if the image is on the other side from the lens and negative value if the image is on the same side. Use ray tracing to determine the height of the image. Express your answer with the appropriate units.arrow_forwardA student makes a microscope using an objective lens and an eyepiece. If she moves the lenses closer together, does the microscope’s magnification increase or decrease? Explain.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