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RHCP12 RHCP12
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6 months ago

Three lenses, each of focal length 90 cm, are placed in contact. What is the focal length of the combination?



27 cm



93 cm



1/30 cm



45 cm



30 cm

Textbook 
College Physics

College Physics


Edition: 5th
Author:
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culwri204culwri204
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6 months ago
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