Chapter+23+Mirrors+and+Lenses

Chapter 23 Mirrors and Lenses

__Vocabulary__ FORMULAS M= lateral magnification p=object distance q=image distance R= radius of curvature n= indice of refraction f=focal length
 * Lateral Magnification- the image formed by an object placed in front of a flat mirror is as far behind the mirror as the object is in front of the mirror.
 * Concave Mirror- the mirror is on the inside of the object and has a concave surface.
 * Real Image- a real image is formed whenever reflected light actually passes through a point.
 * Princile Axis- the line that passes through the center of curvature and center of the spherical segment for a mirror.
 * Convex mirror- a mirror where light is reflected from the outer, convex surface. Also known as a diverging mirror.
 * Spherical Aberration- a blurred image is the result of rays that make a large angle with the principle axis converge to other points on the principle axis.
 * Mirage- an image produced by refraction in the atmosphere.
 * ~in order~Concave Mirror, Convex Mirror, Diverging Lense, Converging Lense**

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PROBLEMS

1. An object is placed 16.0 cm away from a convex mirror with a focal length of magnitude 6.0 cm. What is the location of the image? a. 9.60 cm in front of the of the mirror b. 4.36 cm in front of mirror c. 9.60 cm behind the mirror d. 4.36 cm behind the mirror e. 10.0 cm in front of mirror 2. A thin, converging lens has a focal length of 8.00 cm. If a real, inverted image is located 12.0 cm to the right of the lens, where is the object located? a. 12.0 cm to the left of the lens b. 24.0 cm to the right of the lens c. 24.0 cm to the left of the lens d. 18.0 cm to the right of the lens e. 18.0 cm to the left of the lens 3. An object is located 50.0 cm from a converging lens having a focal length of 15 cm. Which of the following is true regarding the image formed by the lens? a. It is virtual, upright, and larger than the object b. It is virtual, inverted, and smaller than the object c. It is real, inverted, and smaller than the object d. It is real, inverted, and larger than the object e. It is real, upright, and larger than the object 4. A 2.00 cm-high object is placed 3.00 cm in front of a concave mirror. If the image is 5.00 cm high and virtual, what is the focal length? a. 5.00 cm b. 2.50 cm c. 0.20 cm d. 10.0 cm e. not enough information 5. A man standing 1.52 m in front of a shaving mirror produces an image 18.0 cm in front of it. How close to the mirror should he stand if he wants to form an upright image of his chin that is twice the chin's actual size? a. .11842 m b. 11.0 cm c. 9.00 cm d. 8.05 cm e. 4.95 cm

**Example Problems** If an 8.00 cm-high object is put in front of a concave mirror and creates a 32.0 cm-high image, what is the lateral magnification? If a mirror has a lateral magnification of 1.50 and an object is placed 10.0 cm away from it, where is the image created? A lens has a radius of curvature of 1.60 and an object is placed 25.0 cm in front of it. What is the distance of the image? The focal length?