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Physics
Physics
Problem
Which one of the following expressions gives the approximate overall magnifying power
M
M
M
of a compound microscope when the final image is at infinity (normal adjustment)? a)
M
=
(
L
f
o
)
(
1
+
D
f
e
)
M = \left(\dfrac{L}{f_{o}}\right)\left(1+\dfrac{D}{f_{e}}\right)
M
=
(
f
o
L
)
(
1
+
f
e
D
)
b)
M
=
(
L
f
o
)
(
D
f
e
)
M = \left(\dfrac{L}{f_{o}}\right)\left(\dfrac{D}{f_{e}}\right)
M
=
(
f
o
L
)
(
f
e
D
)
c)
M
=
L
+
D
f
o
+
f
e
M = \dfrac{L+D}{f_{o}+f_{e}}
M
=
f
o
+
f
e
L
+
D
d)
M
=
(
f
o
L
)
(
D
f
e
)
M = \left(\dfrac{f_{o}}{L}\right)\left(\dfrac{D}{f_{e}}\right)
M
=
(
L
f
o
)
(
f
e
D
)
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