An object 1.7 cm high is held 3 cm from a person's cornea, and its reflected image is measured to be0.157 cm high.Think & Prepare:1. What kind of mirror is the cornea, convex or concave?2. What kind of mirror causes magnification?3. What kind of image is it?4. What signs will the different quantities have?(a) Set-up the table for some known quantities.i) Make sure to use the correct sign for the image distances, object distances, and the focallengths.ii) Make sure to use the correct sign for the image and object heights. Inverted object and imageheights are negative.d₁ ==iii) Do NOT do any calculations for this section.h;=(b) What is the magnification?M=cmcmcm (Include the appropriate sign for an erect or inverted image)(c) Where is the image?d;=cm (include the appropriate sign)(d) Find the radius of curvature of the convex mirror formed by the cornea.cm (include the appropriate sign)R =Note that this technique is used by optometrists to measure the curvature of the cornea forcontact lens fitting. The instrument used is called a keratometer, or curve measurer.

Step 1:a)Object height is +1.7cmObject distance is +3cmImage height is +0.157cmStep 2:b)The…

Answered: An object 1.7 cm high is held 3 cm from…

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. What is the focal length of a makeup mirror that produces a magnification of 1.51 when a person's face is 12.2 cm away? Think & Prepare: 1. What kind of mirror causes magnification? 2. What kind of image is it? 3. What signs will the different quantities have? (a) Set-up the table for some known quantities. i) Make sure to use the correct sign for the image distances, object distances, and the focal lengths. ii) Make sure to use the correct sign for the image and object heights. Inverted object and image heights are negative. iii) Do NOT do any calculations for this section. do = V cm M= (b) What is the focal length? f = cm
7. A concave mirror has a focal length of 12 cm. An object is placed 6 cm in front of the mirror. The image position in the mirror is: A. 6 cm in back of the mirror B. 6 cm in front of the mirror C. 12 cm in back of the mirror D. 12 cm in front of the mirror 8. Determine the image magnification in question #7. A. 2x magnification, upright B. 2x magnification, inverted C. 0.5x magnification, inverted D. 0.5x magnification, upright
Which of the following statements for single optic devices are true? Choose all that apply. a. Any physicist worth their weight in garbanzo beans (not chick peas) knows that concave lenses will have a positive focal length. b. For virtual images, the image distance is positive and the object distance is negative. c. By convention, if the image height is positive then the image is upright. d. If an optic produces an image with a magnification of 0.6, then the image is diminished. e. Experiments have shown that convex mirrors can create real images. f. If an image has a magnification of -6, then the image is real.
A doctor examines a mole with a 15.8 cm focal length magnifying glass held 13.6 cm from the mole. a. Where is the image? (Include the sign of the value in your answer.) m b. What is its magnification? c. How big in millimeters is the image of a 4.87 mm diameter mole? mm
A. Calculate the focal length of the mirror formed by the convex side of a shiny spoon that has a 1.67 cm radius of curvature. B. What is its power in diopters?
2. An object is placed 50 ?? from a convex lens having a focal length of 13.5 ??.a. Calculate the image distance. b. Calculate the magnification of the lens. c. State whether the image is real or virtual, upright or inverted and larger or smaller thanthe object. d. Draw a diagram of the lens in its present configuration.
In order to calculate the focal length of a glass lens, it is NOT NECESSARYto know A. the index of refraction of the glassB. the index of refraction of the medium in which the glass is locatedC. the radii of curvature of the lens’ surfaceD. the diameter of the lens
A simple magnifier has a focal length, f = +10 cm. true or false if: A. It uses a converging lens. B. Its optical power is +10 D. C. The final image can be projected on a screen
Solve problem no.1
QUESTION 6 An SPHY012 student is required to set an optics experiment where he is expected to use a mirror that will form an image on a wall that is 3 m from the mirror, using the headlight lamp that is placed 10.0 cm in front of the mirror. What would be the size of the image as compared to the size of the object? O A. The image is of the same size as the object. B. The image is 30 times bigger than the object. c. The image is 30 times smaller than the object OD. The image is 5 times bigger than the object OE The image is 10 times bigger than the object.
A certain slide projector has a 110 mm focal length lens. A. How far away is the screen (in m), if a slide is placed 115 mm from the lens and produces a sharp image? B. If the slide is 15.0 by 30.0 mm, what are the dimensions of the image? __ cm by __ cm.
A lens with a focal length of 4.00 cm is placed 10.00 cm from an object. The lens described would be a _________ lens. The image described would be a ________ image. a. converging, real b. converging, virtual c. diverging, virtual d. diverging, real

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