PhysicsLAB Practice Problems
Thin Lens Equation

Directions: On this worksheet you will be able to practice using the thin lens equation.

Question 1  A 13-cm tall object is placed 30 cm from a converging lens that has a focal length of 12 cm. How far from the lens will the image be formed?
Question 2  How tall is the image formed in Question 1?
Question 3  Describe the image formed in Question 1.
Question 4  The same 13-cm tall object is now placed 30 cm from a diverging lens that has a focal length of -28 cm. How far from the lens will the image be formed?
Question 5  How tall is the image formed in Question 4?
Question 6  Describe the image formed in Question 4.
Question 7  Which lens could be used to produce a virutal image taller than the object?
Question 8  At what distance in front of the lens in Question 7 should the 13-cm tall object be placed to produce a virtual image that is 3 times taller?


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