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anonymous

  • 5 years ago

8. Practice: A 29-cm pencil is placed 35 cm in front of a convex lens and illuminated by a spotlight. The focal point of the lens is 28 cm from the lens. A. What is the height of the pencil’s image? _______________ B. How far from the lens will the image of the pencil be focused? _______________ Show your work:

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  1. anonymous
    • 5 years ago
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    Do you have any initial ideas as to how to solve this problem?

  2. anonymous
    • 5 years ago
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    di = image distance, do = object distance, hi = height of image, ho = height of object

  3. anonymous
    • 5 years ago
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    1/f = 1/di + 1/do and m = hi/ho = - di/do

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spraguer (Moderator)
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