Concept explainers
Set up:
Solve: (a)
(b)
Reflect: A converging lens can also form a virtual image, if the object distance is less than the focal length. But in that case |s′| > s and the image would be farther from the lens than the object is.
30. Figure 24.45 shows an object and its image formed by a thin lens, (a) What is the focal length of the lens and what type of lens (converging or diverging) is it? (b) What is the height of the image? Is it real or virtual?
Figure 24.45
Problem 30.
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