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Physics
Physics
Problem
A refracting telescope has an objective of focal length
f
o
=
1.0
m
f_o = 1.0\,\text{m}
f
o
=
1.0
m
and an eyepiece of focal length
f
e
=
5.0
cm
f_e = 5.0\,\text{cm}
f
e
=
5.0
cm
. Its magnifying power under normal adjustment is a)
+
0.05
+0.05
+
0.05
b)
−
20
-20
−
20
c)
+
20
+20
+
20
d)
−
0.2
-0.2
−
0.2
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