* cO Item 42 42 of 59 (> Constants Part A A diverging lens with f=-37.5 cm is placed 13.0 cm behind a converging lens with f%3D20.0 cm Where will an object at infinity be focused? Determine the image distance from the second lens. Follow the sign conventions. Express your answer to two significant figures and include the appropriate units. HA Value Units Submit Request Answer Provide Feedback Next > MacBook Air 114 F8 F12 F10 F4 F5 %24 del 4.

* cO Item 42 42 of 59 (> Constants Part A A diverging lens with f=-37.5 cm is placed 13.0 cm behind a converging lens with f%3D20.0 cm Where will an object at infinity be focused? Determine the image distance from the second lens. Follow the sign conventions. Express your answer to two significant figures and include the appropriate units. HA Value Units Submit Request Answer Provide Feedback Next > MacBook Air 114 F8 F12 F10 F4 F5 %24 del 4.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter2: Geometric Optics And Image Formation

Section: Chapter Questions

Problem 106P: Construct Your Own Problem Consider a telescope of the type used by Galileo, having a convex...

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A digital camera equipped with an f = 50.0-mm lens uses a CCD sensor of width 8.70 mm and height 14.0 mm. Find the closest distance from the camera to a 1.80-m-tall person if the persons full image is to 6t on the CCD sensor.
In a LASIK vision correction, the power of a patient’s eye is increased by 3.00 D. Assuming this produces normal close vision, what was the patient’s near point before the procedure?
(a) The print in many books averages 3.50 mm in height. How high is the image at the print on the retina when the book is held 30.0 cm from the eye? (b) Compare the size of the print to the sizes of rods and cones in the fovea and discuss the possible details observable in the letters. (The eye-brain system can perform better because of interconnections and higher order image processing.)
A digital camera equipped with an f = 50.0-mm lens uses a CCD sensor of width 8.70 mm and height 14.0 mm. Find the closest distance from the camera to a 1.80-m-tall person if the persons full image is to 6t on the CCD sensor.
A particular patients eyes are unable to focus on objects closer than 35.0 cm and corrective lenses are to be prescribed so that the patient can focus on objects 20.0 cm from their eyes. (a) Is the patient nearsighted or farsighted? (b) If contact lenses are to lie prescribed, determine the required lens power. (c) If eyeglasses are to be prescribed instead and the distance between the eyes and the lenses is 2.00 cm, determine the power of the required corrective lenses. (d) Are the required lenses converging or diverging?
A diverging lens has a focal length of 20.0 cm. Use graph paper to construct accurate ray diagrams for object distance of (a) 40.0cm and (b) 10.0 cm. In each case, determine the location of the image from the diagram and the image magnification, and state whether the image is uptight or inverted. (c) Estimate the magnitude of uncertainty in locating the points in the graph. Are your answers and the uncertainty consistent with the algebraic answers found in Problem 33?
A particular patients eyes are unable to focus on objects closer than 35.0 cm and corrective lenses are to be prescribed so that the patient can focus on objects 20.0 cm from their eyes. (a) Is the patient nearsighted or farsighted? (b) If contact lenses are to lie prescribed, determine the required lens power. (c) If eyeglasses are to be prescribed instead and the distance between the eyes and the lenses is 2.00 cm, determine the power of the required corrective lenses. (d) Are the required lenses converging or diverging?
A particular nearsighted patient cant see objects clearly beyond 15.0 cm from their eye. Determine (a) the lens power required to correct the patients vision and (b) the type of lens required (converging or diverging). Neglect the distance between the eye and the corrective lens.
A person with a nearsighted eye has near and far points of 16 cm and 25 cm, respectively. (a) Assuming a lens is placed 2.0 cm from the eye, what power must the lens have to correct this condition? (b) Suppose contact lenses placed directly on the cornea are used to correct the person's eyesight. What is the power of the lens required in this case, and what is the new near point? Hint: The contact lens and the eyeglass lens require slightly different powers because they are at different distances from the eye.
Choose the option from each pair that makes the following statement correct. For a farsighted person, the [(a) near point; (b) far point] is always located farther than 1 (c) 1 m; (d) 25 cm] from the eye and lens corrective lens is [(e) converging; (f) diverging).
In Figures CQ36.11a and CQ36.11b, which glasses correct nearsightedness and which correct farsightedness?
Construct Your Own Problem Consider a telescope of the type used by Galileo, having a convex objective and a concave eyepiece as illustrated in part (a) of Figure 2.40. Construct a problem in which you calculate the location and size of the image produced. Among the things to be considered are the focal lengths of the lenses and their relative placements as well as the size and location of the object. Verify that the angular magnification is greater than one. That is, the angle subtended at the eye by the image is greater than the angle subtended by the object.