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need help with parts b and d only

need help with parts b and d only

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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I need help with parts b and d only

Nearsightedness and Farsightedness A person with normal vision can focus on objects as close as a few centimeters from the eye up to objects infinitely far away. There exist, however, certain conditions under which the range of vision is not so extended. For example, a nearsighted person cannot focus on objects farther than a certain point (the far point), while a farsighted person cannot focus on objects closer than a certain point (the near point). Note that even though the presence of a near point is common to everyone, a farsighted person has a near point that is much farther from the eye than the near point of a person with normal vision. Both nearsightedness and farsightedness can be corrected with the use of glasses or contact lenses. In this case, the eye converges the light coming from the image formed by the corrective lens rather than from the object itself. ▾ Part A When glasses (or contact lenses) are used to correct nearsightedness, where should the corrective lens form an image of an object located at infinity in order for the eye to form a clear image of that object? ▸ View Available Hint(s) The lens should form the image at the near point. The lens should form the image at the far point. The lens should form the image at a point closer to the eye than the near point. The lens should form the image at a point farther from the eye than the far point Submit ✓ Correct ▾ Part B fi= Previous Answere This effect is achieved by the use of a diverging lens, as shown in the figure. Object at infinity B Submit Image If a nearsighted person has a far point de that is 3.50 m from the eye, what is the focal length f₁ of the contact lenses that the person would need to see an object at infinity clearly? Express your answer in meters. ▸ View Available Hint(s) Far point For Part foveart do for Part redio foart Bre@or Part 8 keyboard shortcuts for Part 8 help for Part B m 1 of 5 Review | Constants >
Transcribed Image Text:Nearsightedness and Farsightedness A person with normal vision can focus on objects as close as a few centimeters from the eye up to objects infinitely far away. There exist, however, certain conditions under which the range of vision is not so extended. For example, a nearsighted person cannot focus on objects farther than a certain point (the far point), while a farsighted person cannot focus on objects closer than a certain point (the near point). Note that even though the presence of a near point is common to everyone, a farsighted person has a near point that is much farther from the eye than the near point of a person with normal vision. Both nearsightedness and farsightedness can be corrected with the use of glasses or contact lenses. In this case, the eye converges the light coming from the image formed by the corrective lens rather than from the object itself. ▾ Part A When glasses (or contact lenses) are used to correct nearsightedness, where should the corrective lens form an image of an object located at infinity in order for the eye to form a clear image of that object? ▸ View Available Hint(s) The lens should form the image at the near point. The lens should form the image at the far point. The lens should form the image at a point closer to the eye than the near point. The lens should form the image at a point farther from the eye than the far point Submit ✓ Correct ▾ Part B fi= Previous Answere This effect is achieved by the use of a diverging lens, as shown in the figure. Object at infinity B Submit Image If a nearsighted person has a far point de that is 3.50 m from the eye, what is the focal length f₁ of the contact lenses that the person would need to see an object at infinity clearly? Express your answer in meters. ▸ View Available Hint(s) Far point For Part foveart do for Part redio foart Bre@or Part 8 keyboard shortcuts for Part 8 help for Part B m 1 of 5 Review | Constants >
A person with normal vision can focus on objects as close as a few centimeters from the eye up to objects infinitely far away. There exist, however, certain conditions under which the range of vision is not so extended. For example, a nearsighted person cannot focus on objects farther than a certain point (the far point), while a farsighted person cannot focus on objects closer than a certain point (the near point). Note that even though the presence of a near point is common to everyone, a farsighted person has a near point that is much farther from the eye than the near point of a person with normal vision. Both nearsightedness and farsightedness can be corrected with the use of glasses or contact lenses. In this case, the eye converges the light coming from the image formed by the corrective lens rather than from the object itself. When glasses (or contact lenses) are used to correct farsightedness, where should the corrective lens form an image of an object located between the eye and the near point in order for the eye to form a clear image of that object? ▸ View Available Hint(s) Ⓒ The lens should form the image at the near point. The lens should form the image at the far point. The lens should form the image at a point closer to the eye than the near point. The lens should form the image at a point farther from the eye than the far point. Submit ✓ Correct Part D This effect is achieved by the use of a converging lens, as shown in the figure. f2 = Previous Answers Submit Image Provide Feedback Near point. If a farsighted person has a near point that is 0.600 m from the eye, what is the focal length f₂ of the contact lenses that the person would need to be able to read a book held at 0.350 m from the person's eyes? Express your answer in meters. ▸ View Available Hint(s) Object for Part for Part do for Part&redo for Cart D resor Part D keyboard shortcuts for Part D help for Part D D ✓ In Next >
Transcribed Image Text:A person with normal vision can focus on objects as close as a few centimeters from the eye up to objects infinitely far away. There exist, however, certain conditions under which the range of vision is not so extended. For example, a nearsighted person cannot focus on objects farther than a certain point (the far point), while a farsighted person cannot focus on objects closer than a certain point (the near point). Note that even though the presence of a near point is common to everyone, a farsighted person has a near point that is much farther from the eye than the near point of a person with normal vision. Both nearsightedness and farsightedness can be corrected with the use of glasses or contact lenses. In this case, the eye converges the light coming from the image formed by the corrective lens rather than from the object itself. When glasses (or contact lenses) are used to correct farsightedness, where should the corrective lens form an image of an object located between the eye and the near point in order for the eye to form a clear image of that object? ▸ View Available Hint(s) Ⓒ The lens should form the image at the near point. The lens should form the image at the far point. The lens should form the image at a point closer to the eye than the near point. The lens should form the image at a point farther from the eye than the far point. Submit ✓ Correct Part D This effect is achieved by the use of a converging lens, as shown in the figure. f2 = Previous Answers Submit Image Provide Feedback Near point. If a farsighted person has a near point that is 0.600 m from the eye, what is the focal length f₂ of the contact lenses that the person would need to be able to read a book held at 0.350 m from the person's eyes? Express your answer in meters. ▸ View Available Hint(s) Object for Part for Part do for Part&redo for Cart D resor Part D keyboard shortcuts for Part D help for Part D D ✓ In Next >
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