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

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

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

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27 cm

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93 cm

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1/30 cm

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45 cm

▸

30 cm

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College Physics

Edition: 5^th

Author: Giambattista

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