COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 24, Problem 7QAP
To determine
Whether the lens is diverging or converging?
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•42 Figure 34-40 gives the lateral
magnification m of an object versus
the object distance p from a lens as
the object is moved along the cen-
tral axis of the lens through a range
of values for p out to p, = 20.0 cm.
What is the magnification of the ob-
ject when the object is 35 cm from
the lens?
E 0.5
p (cm)
Figure 34-40 Problem 42.
•48 An object is moved along the central axis of a thin lens while
the lateral magnification m is measured. Figure 34-43 gives m ver-
sus object distance p out to p, = 8.0 cm. What is the magnification
of the object when the object is 14.0 cm from the lens?
p (cm)
•8 An object is placed against the
center of a spherical mirror and
then moved 70 cm from it along the
central axis as the image distance i is
measured. Figure 34-36 gives i
versus object distance p out to P. =
40 cm. What is i for p = 70 cm?
400
-400
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) Use the thin-lens equation to derive an expression for q in terms of f and p. (b) Prove that for a real object and a diverging lens, the image must always be virtual. Hint: Set f = |f| and show that q must be less than zero under the given conditions. (c) For a real object and converging lens, what inequality involving p and f must hold if the image is to be real?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_forwardA 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_forward
- •• A certain telescope uses a concave spherical mirror that has a radius equal to 8.0 m. Find the location and diameter of the image of the moon formed by this mirror. The moon has a diameter of 3.5 X 10°m and is 3.8 x 10* m from Earth. 31arrow_forward• During a daytime football game you notice that a player’s reflective helmet forms an image of the Sun 4.8 cm behind the surface ofthe helmet. What is the radius of curvature of the helmet, assuming it to be roughly spherical?arrow_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 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• 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• (a) Use a ray diagram to determine the approximate location ofthe image produced by a concave lens when the object is at a distance 2∙ ƒ ∙ from the lens. (b) Is the image upright or inverted? (c) Isthe image real or virtual? Explain.arrow_forward
- 3. Bifocal lenses are prescribed for a patient, the components having focal length of 40cm & -300cm. • What are the new and far points of the patients eye? 4. 45 year old man can see with his left eye between 25 → 300 cm and in his right eye between 15cmo, a man has astigmatism at his left eye which requires a lens of focal length + 0.5m at axis 120°. The patient requires magnification glasses of focal length 0.25m. write the required prescription for this patientarrow_forwardIt 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?•arrow_forward400 •44 An object is placed against the center of a thin lens and then moved away from it along the central axis as the image distance i is measured. Figure 34-41 gives i versus object distance p out to p, = 60 cm. What is the image distance when p= 100 -400 p (cm) Figure 34-41 Problem 44. cm? (un)!arrow_forward
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