Images Formed by Lenses
AP Physics 2 · Flashcards · Application
AP PHYSICS 2 · FLASHCARDS
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QUESTION
Find the focal length if power of lens is
+
5
+5
+
5
D.
QUESTION
Find the image distance if
f
=
10
f = 10
f
=
10
cm and
d
o
=
15
d_o = 15
d
o
=
15
cm for a convex lens.
QUESTION
If
f
=
20
f = 20
f
=
20
cm and
d
o
=
30
d_o = 30
d
o
=
30
cm, calculate
d
i
d_i
d
i
for a convex lens.
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ANSWER
d
i
=
60
d_i = 60
d
i
=
60
cm. Using lens formula:
1
20
=
1
30
+
1
d
i
\frac{1}{20} = \frac{1}{30} + \frac{1}{d_i}
20
1
=
30
1
+
d
i
1
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