CW 02: Optics Mirrors

Unit 14 Mirrors Classwork 02 1 Physics CW 02: Optics – Mirrors Name: ______Date: ______Period: ______You must show the work that leads to your answer to receive credit. The answer must include the appropriate unit. For each situation: (a) Calculate image location; (b) calculate image size; (c) is the image real or virtual; (d) draw the diagram – use a ruler 1. Object is 4 cm tall, located 15 cm from a concave mirror with a focal length of 5 cm

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2. Object is 6 cm tall, located 12 cm from a convex mirror with a focal length of – 8 cm

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3. Object is 5 cm tall, located 8 cm from a concave mirror with a center of curvature of 24 cm. Unit 14 Mirrors Classwork 02 2

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4. Object is a star 107 m in diameter, located an infinite distance from a concave mirror with a focal length of 20 cm

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______cm_____5. A book, 200 cm from a concave mirror produces a real image 80 cm Unit 14 Mirrors Classwork 02 3 from the mirror. What is the mirror’s focal length?

______cm____6. Your height is 180 cm. You see your image in a Christmas tree ornament, a 6 cm diameter ball, and you are 100 cm from the ornament. How tall is your image?

CHALLENGE PROBLEMS

______cm____7. A concave mirror has a focal length of 80 cm. A flagpole is 5000 cm tall and the mirror produces a real image that is 4 cm tall. How far away is the flagpole?

______cm___8. A concave mirror has a focal length of 12 cm. How far away from the mirror should an object be to produce a real image that is 3 times life size?

______cm___ 9. A concave mirror has a focal length of 12 cm. How far away from the mirror should you be to produce a virtual image that is 3 times life size?