Week 3 1

Week 3 2

A 3.0 cm tall object is 45 cm in front of a concave mirror that has a focal length of 25 cm.

•What is the image position?

•What is the image height?

•What is the magnification?

•Is this a real or virtual image?

Week 3 3

A 3.0 cm tall object is 45 cm in front of a convex mirror that has a focal length of 25 cm.

•What is the image position?

•What is the image height?

•What is the magnification?

•Is this a real or virtual image?

Week 3 4

Week 3 5

The human eye has a focal point, just like any other optical instrument

Week 3 6

Week 3 7

Week 3 8

With her right eye, Maria can focus on a sign 0.5 m away but not on a tree 10 m away.

•Is Maria near or far sighted?

•What kind of lens does she need: converging or diverging?

•Which of the following could be the eyeglass prescription for her right eye?

A. +3.0 D

B. +10 D

C. -5.0 D

D. -1.5 D

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Week 3 9

Week 3 10

Week 3 11

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Week 3 12

A compound lens system consists of two converging lenses, placed 40.0 cm apart. The first lens has a focal length of f1=+10.0 cm and the second has a focal length of f2=+8.0 cm. An object 1.0 cm tall is placed 30.0 cm in front of the first lens.

1. What is the location of the final image produced by this lens system?

2. How tall is the final image?

3. Is the final image upright or inverted?

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