Concept explainers
The image and object positions.
Answer to Problem 17PP
The object is placed at a distance of
Explanation of Solution
Given:
The focal length of the convex lens,
The height of the object,
Formula used:
Thin lens equation,
Where,
And,
Magnification,
Where,
Calculation:
It is given that the image is of the same height as that of the object. This case is possible only when the image formed is real, thus
Negative sign denotes inverted and real image.
Then using the above values in magnification formula, the image and object distance will be,
Now, using the given and above values in Thin lens equation, the object distance will be,
And, then the image distance will be,
Conclusion:
Hence, the object is placed at a distance of
Chapter 18 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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