Practice Problems
Thin Lens Equation
Directions:
On this worksheet you will be able to practice using the thin lens equation with spherical lenses.
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Question 1
A 18-cm tall object is placed 27 cm from a converging lens that has a focal length of 11 cm. At what
distance
from the lens will the image be formed?
6.3 cm
16.0 cm
18.6 cm
5.4 cm
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Question 2
How tall is the image formed in
Question 1
?
4.2 cm
3.6 cm
12.4 cm
10.7 cm
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Question 3
Describe the image formed in
Question 1
.
real and inverted
virtual and upright
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Question 4
The same 18-cm tall object is now placed 27 cm from a diverging lens that has a focal length of -28 cm. At what
distance
from the lens will the image be formed?
1.0 cm
1.8 cm
13.7 cm
55.0 cm
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Question 5
How tall is the image formed in
Question 4
?
1.2 cm
9.2 cm
36.7 cm
0.7 cm
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Question 6
Describe the image formed in
Question 4
.
virtual and upright
real and inverted
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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 4
Question 1
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Question 9
At what
distance
in front of the lens in
Question 8
should the 18-cm tall object be placed to produce a virtual image that is 3 times taller?
5.5 cm
7.3 cm
3.7 cm
33.0 cm
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