What is the focal length of a makeup mirror that produces a magnification of 1.5 when a person'sface is 12.2 cm away?Think & Prepare1. 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 imageheights are negative.iii) Do NOT do any calculations for this section.d₁ =M=(b) What is the focal length?f=cmcm

Step 1:a) Set up the table for the known quantitiesObject distance, do=-12.2 cmMagnification of the…

Answered: What is the focal length of a makeup…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter26: Image Formation By Mirrors And Lenses

Section: Chapter Questions

Problem 41P

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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?
An object is held 85.2 cm away from a mirror. The mirror has a focal length of -13.8 cm. A.) Determine the image distance. X cm B.) Determine the magnification. C.) If the object is 0.9 cm long, determine the image height. X cm D.) Which of the following are true about the image? Choose all that apply. O The image is virtual. The image is inverted. OThe image is upright. The image is real. Which of the following are true about the mirror? Choose all that apply. - The mirror is diverging. The miror is concave. The mirror is converging. O The mirror is convex.
What is the focal length of a makeup mirror thatproduces a magnification of 1.50 when a person’s face is12.0 cm away? Explicitly show how you follow the following steps. Step 1. First make sure that image formation by a spherical mirror is involved.Step 2. Determine whether ray tracing, the mirror equation, or both are required. A sketch is very useful even if raytracing is not specifically required by the problem. Write symbols and known values on the sketch.Step 3. Identify exactly what needs to be determined in the problem (identify the unknowns).Step 4. Make a list of what is given or can be inferred from the problem as stated (identify the knowns).Step 5. If ray tracing is required, use the ray-tracing rules listed near the beginning of this section.Step 6. Most quantitative problems require using the mirror equation. Use the examples as guides for using the mirrorequation.Step 7. Check to see whether the answer makes sense. Do the signs of object distance, image distance, and…
A. If an 8 cm doll is standing away from a diverging lens and the focal length is 6 m, find the image distance, magnification, and image height from 4, 8, and 10 m away. B. Determine if the image is real or virtual, inverted or erect, smaller or larger. Use the formula below:
imagine you had a lens and imaged an object at infinity on a piece of paper. To form a clear image, you had to place the paper 20 cm from the lens. What is the focal length of the lens? O A. infinity O B. (infinity - 20 cm) OC.20 cm O D.0.05 cm O E. O cm
A. If a 4.3 cm doll is standing away from a converging lens and the focal length is 8.2 m, find the image distance, magnification, and image height from 4, 8, and 10 m away. B. Determine if the image is real or virtual, inverted or erect, and smaller or larger. Use the formula below:
1. An object 1.8 cm high is held 3.5 cm from a person's cornea, and its reflected image is measured to be 0.182 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 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= = || || ho h₁= 0.182 cm cm cm (Include the appropriate sign for an erect or inverted image) (b) What is the magnification? M= (c) Where is the image? d₁ = cm (include the appropriate sign)
1. An object 1.7 cm high is held 3.1 cm from a person's cornea, and its reflected image is measured to be 0.142 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 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. %D cm ho cm h; = cm (Include the appropriate sign for an erect or inverted image) (b) What is the magnification? M= (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. V cm (include the appropriate sign) R = Note that this technique is used by optometrists to measure the…
A doctor examines a mole with a 15.5 cm focal length magnifying glass held 14.0 cm from the mole. a. Where is the image? (Enter the image distance in meters) b. What is its magnification? c. How big in millimeters is the image of a 5.30 mm diameter mole?
a). An object is placed at a distance 20 cm from the focal point of a convex lens. A real inverted image is received at 15.0 cm from the focal point. i. Determine the focal length of the convex lens. il. What is the power of the lens? b). i. In constructing a projector, my image is inverted, how do I normalize my image with your knowledge of total internal reflection? You can use illustrations to aid your explanation. ii. In a theatre, two plane mirrors are incline to each other in such a way to produce 17 images of an object. Determine the angle required to achieve this objective. c)i, why is it not easy to achieve diffraction with light? id. How is this problem in 6ci)
H.W) An object is placed in front of a concave mirror of focal length 20 cm. the image is virtual with twice the height of the object. Calculate a) the object-mirror distance? b) the image-mirror distance?
The magnitude of the focal length of a concave lens is 20.00 cm. An object isplaced at 30.00 cm from the lens.a. Do the ray tracing of an object of length 5.0 cm perpendicular to the axis.b. Is the image real or virtual? c. Is the image upright or inverted? d. Where will the image form? e. What is the magnification?

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