Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
4th Edition
ISBN: 9780133942651
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
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Chapter 35, Problem 12EAP
Ellen wears eyeglasses with the prescription -1.0 D.
a. What eye condition does Ellen have?
b. What is her far point without the glasses?
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Suppose you have a 0.750 D prescription for contact lenses.a. What’s your near point? b. What would your prescription be, in diopters, for glasses worn 2.20 cm from the eyes?
Suppose you have a 0.750 D prescription for contact lenses.a. What’s your near point?b. What would your prescription be, in diopters, for glasses worn 2.20 cm from the eyes?
A. A man with myopia has a far point of 20cm. What power contact lens will correct his vision?
B. Repeat the same problem for glasses held 1.5cm from his eyes.
Chapter 35 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
Ch. 35 - Prob. 1CQCh. 35 - Prob. 2CQCh. 35 - Prob. 3CQCh. 35 - Prob. 4CQCh. 35 - Prob. 5CQCh. 35 - Prob. 6CQCh. 35 - Prob. 7CQCh. 35 - To focus parallel light rays to the smallest...Ch. 35 - Prob. 9CQCh. 35 - Two converging lenses with focal lengths of 40 cm...
Ch. 35 - Prob. 2EAPCh. 35 - Prob. 3EAPCh. 35 - Prob. 4EAPCh. 35 - Prob. 5EAPCh. 35 - A 2.0-rn-tall man is 10 m in front of a camera...Ch. 35 - What is the f-number of a lens with a 35 mm focal...Ch. 35 - What is the aperture diameter of a...Ch. 35 - A camera takes a properly exposed photo at f/5.6...Ch. 35 - A camera takes a properly exposed photo with a...Ch. 35 - Ramon has contact lenses with the prescription...Ch. 35 - Ellen wears eyeglasses with the prescription -1.0...Ch. 35 - 13. What is the f-number of a relaxed eye with the...Ch. 35 - Prob. 14EAPCh. 35 - Prob. 15EAPCh. 35 - Prob. 16EAPCh. 35 - Prob. 17EAPCh. 35 - A 20 telescope has a 12-cm-diameter objective...Ch. 35 - Prob. 19EAPCh. 35 - Prob. 20EAPCh. 35 - Prob. 21EAPCh. 35 - Prob. 22EAPCh. 35 - Prob. 23EAPCh. 35 - A scientist needs to focus a helium-neon laser...Ch. 35 - Prob. 25EAPCh. 35 - Prob. 26EAPCh. 35 - Prob. 27EAPCh. 35 - Prob. 28EAPCh. 35 - Prob. 29EAPCh. 35 - Prob. 30EAPCh. 35 - Prob. 31EAPCh. 35 - Prob. 32EAPCh. 35 - Prob. 33EAPCh. 35 - Prob. 34EAPCh. 35 - Prob. 35EAPCh. 35 - Prob. 36EAPCh. 35 - 37. You’ve been asked Lo build a telescope from a...Ch. 35 - Prob. 38EAPCh. 35 - Prob. 39EAPCh. 35 - Prob. 40EAPCh. 35 - Prob. 41EAPCh. 35 - Prob. 42EAPCh. 35 - Prob. 43EAPCh. 35 - Prob. 44EAPCh. 35 - Prob. 45EAPCh. 35 - Prob. 46EAPCh. 35 - Alpha Centauri, the nearest star to our solar...Ch. 35 - Prob. 48EAPCh. 35 - Prob. 49EAPCh. 35 - Prob. 50EAP
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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) What is the maximum angular magnification of an eyeglass lens having a focal length of 18.0 cm when used as a simple magnifier? (b) What is the magnification of this lens when the eye is relaxed?arrow_forwardA camera lens used for taking close-up photographs has a focal length of 22.0 mm. The farthest it can be placed from the film is 33.0 mm. (a) What is the closest object that can be photographed? (b) What is the magnification of this closest object?arrow_forward(a) Calculate the focal length of the mirror formed by the shiny back of a spoon that has a 3.00 cm radius of curvature. (b) What is its power in diopters?arrow_forward
- An individual is nearsighted; his near point is 18.0 cm and his far point is 50.0 cm. (a) What lens power is needed to correct his nearsightedness? (b) When the lenses are in use, what is this persons near point?arrow_forwardA small telescope has a concave mirror with a 2.00 m radius of curvature for its objective. Its eyepiece is a 4.00 cm focal length lens. (a) What is the telescope’s angular magnification? (b) What angle is subtended by a 25.000 km diameter sunspot? (c) What is the angle of its telescopic image?arrow_forwardA small telescope has a concave mirror with a 2.00-rn radius of curvature for its objective. Its eyepiece is a 4.00 cm-focal length lens. (a) What is the telescope’s angular magnification? (b) What angle is subtended by a 25,000 km-diameter sunspot? (c) What is the angle of its telescopic image?arrow_forward
- . (a) In a camera equipped with a 50-mm focal-length lens, the maximum distance that the lens can be from the film is 60 mm. What is the smallest distance an object can be from the camera if its image on the film is to be in focus? What is the magnification? (b) An extension tube is added between the lens and the camera body so that the lens can be positioned 100 mm from film. How close can the object be now? What is the magnification?arrow_forwardA person sees clearly wearing eyeglasses that have a power of 4.00 diopters when the lenses are 2.00 cm in front of the eyes. (a) What is the focal length of the lens? (b) Is the person nearsighted or farsighted? (c) If the person wants to switch to contact lenses placed directly on the eyes, what lens power should be prescribed?arrow_forwardA near-sighted person has afar point of 80 cm. (a) What kind of corrective lens the person will need if the lens is to be placed 1.5 cm from the eye? (b) What would be the power of the contact lens needed? Assume distance to contact lens from the eye to be zero.arrow_forward
- A camera with a 50.0-mm focal length lens is being used to photograph a person standing 3.00 m away. (a) How far from the lens must the film be? (b) If the film is 36.0 mm high, what fraction of a 1.75-m-tall person will fit on it? (c) Discuss how reasonable this seems, based on your experience in taking or posing for photographs.arrow_forwardA doctor examines a mole with a 15.0 cm focal length magnifying glass held 13.5 cm from the mole (a) Where is the image? (b) What is its magnification? (c) How big is file image of a 5.00 mm diameter mole?arrow_forwardA dedicated sports car enthusiast polishes the inside and outside surfaces of a hubcap that is a thin section of a sphere. When she looks into one side of the hubcap, she sees an image of her face 30.0 cm in back of the hubcap. She then flips the hubcap over and sees another image of her face 10.0 cm in back of the hubcap. (a) How far is her face from the hubcap? (b) What is the radius of curvature of the hubcap?arrow_forward
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