VARIANT 23Suppose an object such as a book page is held 15 cm from a concave lens of focal length - 10.0 cm. Such alens could be used in eyeglasses to correct pronounced nearsightedness. (a) Using the thin lens equationsto calculate the location of the image. (b) What magnification is produced? (c) Use ray tracing to get anapproximate location for the image.

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Answered: VARIANT 23 Suppose an object such as a…

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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1. An object is placed at the following distances from a convex lens of focal length 10 cm. (a) 8 cm (b)15 cm (c) 20 cm (d) 25 cm Which position of the object will produce (i) a diminished, real and inverted image? (ii) a magnified, real and inverted image? (iii) a magnified, virtual and erect image? (iv) an image of the same size as the object? U'S Justify your answer in each case.
= 20.0 cm and fB 25.0 cm, Q3: A two-lens system. Two converging lenses, A and B, with focal lengths f are placed 80.0 cm apart, as shown in Figure. An object is placed 60.0 cm in front of the first lens. Determine (a) the position, and (b) the magnification, of the final image formed by the combination of the two lenses. F A A B ff TI TI பட B =
VARIANT 14 1. A clear glass light bulb is placed 1.5 m from a convex lens having a 45 cm focal length. Use ray tracing to get an approximate location for the image. Then use the thin lens equations to calculate (a) the location of the image and (b) its magnification. Verify that ray tracing and the thin lens equations produce consistent results. 2. When driving you need to be able to clearly see road signs and traffic some distance ahead of you as well as the dashboard in your car. Assume that you have a normal lens-to-retina distance. (a) What minimum optical power of the eye is needed to clearly see a road sign 150 m ahead? (b) What maximum optical power is needed to clearly see the dashboard 50 cm away? (c) What range of accommodation AF is needed? 3. Determine the speed of the electrons incident on the anode surface of the X-ray tube if the minimum wavelength of the emitted X-ray radiation was 5 nm. 4. A 5000-Ci 60Co source used for cancer therapy is considered too weak to be…
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A contact lens is made of plastic with an index of refraction 1.50. The lens has an outer radius of curvature of + 1.65 cm and an inner radius of curvature of + 5.85 cm. What is its focal length? TTTT Paragraph Arial 3 (12pt) E - E - T- 回i 公 T T, Bullet List O f. Mashups- HTML CSS
a) Find an equation for the length L of a refracting telescope in terms of the focal length of the objective fo and the magnification m. L = (b) A knob adjusts the eyepiece forward and backward. Suppose the telescope is in focus with an eyepiece giving a magnification of 20.3. By what distance must the eyepiece be adjusted when the eyepiece is replaced, with a resulting magnification of 1.0 ✕ 102? Must the eyepiece be adjusted backward or forward? Assume the objective lens has a focal length of 2.32 m. (Use a positive value if the eyepiece must be moved forward toward the objective lens and negative values if the eyepiece must be moved backwards.) cm
EXPERIMENT - FOCAL LENGTH OF THE GIVEN LENS Objective: (a) To investigate the properties of the given lens. (b) To investigate the images formed by the lens for various object positions. (c) To measure the focal length of the lens. Formulae: 1 1 + u 1 1 P = f V Apparatus used in this Experiment: Experimental data Physical Quantity Its Value in cm Image distance in cm 24.5 Object distance in cm 17 Answer the following: Question - 1 Among the 2 distances mentioned in the table, which distance is fixed and which is measured ? 1. Fixed distance - 2. Measured distance -
Tha
1. A patient enters an eye doctor’s office and finds the doctor tells him that his near point is 10.0 cm. The doctor also finds the patient’s far point (with eyes relaxed) is 125 cm. Each eye lens can be assumed to be 2.00 cm from the retina. a) Between what limits (units: diopters) does the power of this patient’s lens (technically lens+cornea combination) vary? b) The doctor is going to prescribe glasses. Calculate the power of the eyeglass lens the patient should use for relaxed distance vision. Is the lens converging or diverging?
A certain camera is able to focus on objects from 1.13 m to ∞o. Suppose you want to take an extreme close-up shot, with the camera 19 cm from the object. Find the focal length of a thin lens that could be placed directly in front of the camera lens such that the image of the close object would be in focus. (Let's denote the minimum and maximum values of the focal length by fmin and fmax, respectively.) 228 m -u I fmin = fmax = XX
(a) For a diverging lens (f = - 16.0 cm), find the image distance for an object that is 16.0 cm from the lens. (b) Determine the magnification of the lens.

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