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(b)
The
minus sign is customarily ignored.
Reflect:
Eq.(25.4) gives
Eq.(25.4) assumes that
that this
is only approximately the case here.
25.34. Set Up:
For each lens,
The image formed by the objective serves as the
object for the eyepiece.
Solve: (a)
(b)
and
(c)
Eq.(25.4) gives
Eq.(25.4) omits the minus sign and is only approximately correct.
25.35. Set Up:
The object for the eyepiece is at its focal point and is the image formed by the objective. Therefore,
where
L
is the length of the microscope.
Solve:
(a)
(b)
Reflect:
When
for example,
and
The approximation
that leads to Eq.(25.4) is fairly accurate.
25.36. Set Up:
Since the image formed by the eyepiece is at infinity, the angular magnification for the eyepiece is
The overall angular magnification of the microscope is
The image formed by the objective
is the object for the eyepiece and is at the focal point of the eyepiece.
Solve: (a)
The image formed by the objective is
from the lens.
gives
(b)
(c)
Eq.(25.4) gives
Eq.(25.4) omits the minus sign and is only approximately correct.
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This note was uploaded on 03/06/2009 for the course PHYS 114 taught by Professor Shoberg during the Spring '07 term at Pittsburg State Uiversity.
 Spring '07
 Shoberg

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