COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 24, Problem 98QAP
To determine
(a)
To Explain:
The type of correcting lens does the person need: single focal length or bifocals.
To determine
(b)
Calculate the focal length.
To determine
(c)
Calculate power of correct lens.
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• It has become common to replace the cataract-clouded lens of the
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intraocular lens greater or less than the removed lens?
It has become common to replace the cataract-clouded lens of the eye with an internal lens. This intraocular lens can be chosen so that the person has perfect distant vision. Will the person be able to read without glasses? If the person was nearsighted, is the power of the intraocular lens greater or less than the removed lens?•
•• A certain telescope uses a concave spherical mirror that
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Chapter 24 Solutions
COLLEGE PHYSICS
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- If the cornea is to be reshaped (this can be done surgically or with contact lenses) to correct myopia, should its curvature be made greater or smaller? Explain.arrow_forwardWill the focal length of a lens change when it is submerged in water? Explain.arrow_forward•• An object is 15.0 cm in front of a converging lens that has a focal length equal to 15.0 cm. A diverging lens that has a focal length whose magnitude is equal to 15.0 cm is located 20.0 cm in back of the first. (a) Find the location of the final image and describe its properties (for example, real and inverted) and (b) draw a ray diagram to corroborate your answers to Part (a). SSM 55arrow_forward
- Asaparrow_forward• A concave mirror produces a virtual image that is three times as tallas the object. (a) If the object is 16 cm in front of the mirror, what is theimage distance? (b) What is the focal length of this mirror?arrow_forwardBifocal lenses are prescribed for a patient, the components having focal length of 40cm & -300cm. • What far points of the patients eye?arrow_forward
- An object is placed at a distance of 10.0 cm from a convex mirror of focal length 15.0 cm. Which of the following is the image formed? • dị = +6.00 cm and M = -0 600 o d = +30 0 cm and M = -3.00 o d=600 cm and M= 0 600 o di = -300 cm and M = +3.00arrow_forwardA camera with a 50.0 mm focal length lens is being used to photograph a person standing 8.00 m away. • How far from the lens must the film be? Provide the solution: cmarrow_forward• An object is a distance 2ƒ from a convex lens. (a) Use a ray diagram to find the approximate location of the image. (b) Is theimage upright or inverted? (c) Is the image real or virtual? Explain.arrow_forward
- 9- EXAMPLE 23-15 A two-lens system. Two converging lenses, A and B, with focal lengths fA in Fig. 23-44a. An object is placed 60.0 cm in front of the first lens as shown in Fig. 23-44b. Determine (a) the position, and (b) the magnification, of the final image formed by the combination of the two lenses. = 20.0 cm and fs # 25.0 cm, are placed 80.0 cm apart, as shown Lens A Lens B FB FR (а) 80.0 cm FIGURE 23-44 Two lenses, A and B, used in combination. Example 23-15. The small numbers refer to the easily drawn rays. FA FB FAIA FR OB (= 1A) doB (b)arrow_forward• A mirrored-glass gazing globe in a garden is 31.9 cm in diameter.What is the focal length of the globe?arrow_forward• A convex mirror on the passenger side of a car produces animage of a vehicle that is 18.3 m from the mirror. If the image islocated 55.4 cm behind the mirror, what is the radius of curvatureof the mirror?arrow_forward
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