Practice Problems
Thin Lens Equation
Directions:
On this worksheet you will be able to practice using the thin lens equation with spherical lenses.
omit
Question 1
A 12-cm tall object is placed 21 cm from a converging lens that has a focal length of 12 cm. At what
distance
from the lens will the image be formed?
9.0 cm
11.1 cm
28.0 cm
3.6 cm
omit
Question 2
How tall is the image formed in
Question 1
?
2.0 cm
16.0 cm
6.3 cm
5.1 cm
omit
Question 3
Describe the image formed in
Question 1
.
real and inverted
virtual and upright
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Question 4
The same 12-cm tall object is now placed 21 cm from a diverging lens that has a focal length of -29 cm. At what
distance
from the lens will the image be formed?
8.0 cm
50.0 cm
12.2 cm
2.0 cm
omit
Question 5
How tall is the image formed in
Question 4
?
1.1 cm
4.6 cm
28.6 cm
7.0 cm
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Question 6
Describe the image formed in
Question 4
.
real and inverted
virtual and upright
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Question 7
Which image, that produced in
Question 3
or in
Question 6
, was formed by converging rays?
Question 6
Question 3
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Question 8
Which lens could be used to produce a virutal image taller than the object?
Question 1
Question 4
omit
Question 9
At what
distance
in front of the lens in
Question 8
should the 12-cm tall object be placed to produce a virtual image that is 3 times taller?
6.0 cm
8.0 cm
4.0 cm
36.0 cm
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