# Unit 13 Review

Reflection and Refraction

 Navigate to Answers for: [ Questions #1-#12 | Questions #13-#22 ] [ #1 | #2 | #3 | #4 | #5 | #6 | #7 | #8 | #9 | #10 | #11 | #12 ]

1. As the angle of incidence is increased for a ray incident on a reflecting surface, the angle between the incident and reflected rays ultimately approaches what value?

 a. zero b. 45 degrees c. 90 degrees d. 180 degrees

The Law of Reflection (7 seconds)

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2. If you stand three feet in front of a plane mirror, how far away would you see yourself in the mirror?

 a. 1.5 ft b. 3.0 ft c. 6.0 ft d. 12.0 ft

Image Characteristics for Plane Mirrors (6 seconds)

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3. A concave mirror with a focal length of 10 cm creates a real image 30 cm away on its principal axis; the corresponding object is located how far from the mirror?
 a. 20.0 cm b. 15.0 cm c. 7.5 cm d. d. 5.0 cm

The Mirror Equation - Concave Mirrors (6 seconds)

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4. A concave mirror forms a real image at 25 cm from the mirror surface along the principal axis. If the corresponding object is at a 10 cm distance, what is the mirror's focal length?

 a. 1.4 cm b. 16.7 cm c. 12.4 cm d. 7.1 cm

The Mirror Equation - Concave Mirrors (6 seconds) | Image Characteristics for Concave Mirrors (9 seconds)

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5. If a virtual image is formed along the principal axis 10 cm from a concave mirror with the focal length 15 cm, what is the object distance from the mirror?

 a. 30.0 cm b. 10.0 cm c. 12.4 cm d. 6.0 cm

The Mirror Equation - Concave Mirrors (6 seconds) | Image Characteristics for Concave Mirrors (9 seconds)

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6. If a virtual image is formed 10 cm along the principal axis from a convex mirror of focal length -15 cm, what is the object distance from the mirror?

 a. 30.0 cm b. 10.0 cm c. 6.0 cm d. 3.0 cm

Image Characteristics for Convex Mirrors (7 seconds) | The Mirror Equation - Convex Mirrors (5 seconds)

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7. If a man's face is 30 cm in front of a concave shaving mirror creating an upright image 1.5 times as large as the object, what is the mirror's focal length?

 a. 12.0 cm b. 20.0 cm c. 70.0 cm d. 90.0 cm

The Mirror Equation - Concave Mirrors (6 seconds) | Image Characteristics for Concave Mirrors (9 seconds)

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8. Which of the following best describes the image of a plane mirror?

1. virtual, inverted and enlarged
2. real, inverted and reduced
3. virtual, upright and the same size as object
4. real, upright and the same size as object

Image Characteristics for Plane Mirrors (6 seconds)

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9. Which of the following best describes the image of a concave mirror when the object is located somewhere between the focal point (F) and the center of curvature (C) of the mirror?

 a. virtual, upright and enlarged b. real, inverted and reduced c. virtual, upright and reduced d. real, inverted and enlarged

The Anatomy of a Curved Mirror (6 seconds)

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10. Which of the following best describes the image of a concave mirror when the object is at a distance further than the center of curvature (C) of the mirror?

 a. virtual, erect and enlarged b. real, inverted and reduced c. virtual, upright and reduced d. real, inverted and enlarged

Ray Diagrams - Concave Mirrors (14 seconds) | Image Characteristics for Concave Mirrors (9 seconds)

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11. Which of the following best describes the image of a concave mirror when the object distance from the mirror is less than the focal point (F) distance?

 a. virtual, upright and enlarged b. real, inverted and reduced c. virtual, upright and reduced

Ray Diagrams - Concave Mirrors (14 seconds) | Image Characteristics for Concave Mirrors (9 seconds)

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12. Which of the following best describes the image of a convex mirror when the object distance from the mirror is less than the absolute value of the focal point (F) distance?

 a. virtual, upright and enlarged b. real, inverted and reduced c. virtual, upright and reduced d. real, inverted and enlarged

Ray Diagrams - Convex Mirrors (8 seconds) | Image Characteristics for Convex Mirrors (7 seconds)

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