Worksheet: Mirrors and Lenses

1. An object 30 cm high is located 80 cm from a concave mirror, focal length 15 cm. a. Where is the image located?(18.46 cm)

b. How high is it?(-6.92 cm)

2. An object 10 cm high is located 5 cm from a concave mirror, focal length 15 cm. c. Where is the image located? (-7.5 cm)

d. How high is it?(15 cm)

3. An object 10 cm high is located 40 cm from a convex mirror, focal length -15 cm. e. Where is the image located?(-10.91 cm)

f. How high is it?(2.73 cm)

4. A candle 86cm long is placed upright in front of a concave mirror whose focal length is 10 cm. The distance of the candle from the mirror is 30 cm.

a. Find the radius of curvature of the mirror.(20 cm)

b. Find the image distance. (15 cm)

1 5. X and Y are each 6 ft. tall. X stands 4 ft. from a vertical mirror, and Y stands 8 ft. from the same mirror. (This is very conceptual) a. Compare the size of X’s image to Y’s image.

b. Find the distance between X’s image and Y’s image.

6. Construct two incident rays to determine the location of the image.

Object focal point

a. What type of image is formed?

7. Construct two incident rays to determine the location of the image.

b. What type of image is formed?

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