
Concept explainers
(a)
The length of tube.
(a)

Explanation of Solution
Given:
The power of both lenses is
Distance between lenses is
Formula used:
Write expression for length of tube.
Here,
Substitute
Calculation:
Substitute
Conclusion:
Thus, the length of tube is
(b)
The lateral magnification of the objective lens.
(b)

Explanation of Solution
Given:
The power of both lenses is
Distance between lenses is
Formula used:
Write expression for length of tube.
Here,
Substitute
Write expression for lateral magnification of microscope.
Substitute
Calculation:
Substitute
Substitute
Conclusion:
Thus, lateral magnification produced by objective lens is
(c)
The magnifying power of microscope.
(c)

Explanation of Solution
Given:
The power of both lenses is
Distance between lenses is
Formula used:
Write expression for length of tube.
Here,
Substitute
Write expression for lateral magnification of microscope.
Substitute
Write expression for magnifying power of microscope.
Here,
Substitute
Calculation:
Substitute
Substitute
Substitute
Conclusion:
Thus, magnifying power of microscope is
(d)
The distance of object from objective lens.
(d)

Explanation of Solution
Given:
The power of both lenses is
Distance between lenses is
Formula used:
Write expression for lens equation for objective lens.
Substitute
Solve above expression for
Calculation:
Substitute
Conclusion:
Thus, the object is placed
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Chapter 32 Solutions
Physics for Scientists and Engineers
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