Two Lenses, the First with Focal Length −12

question 27

Multiple Choice

Two lenses, the first with focal length −12.5 cm and the second with focal length 20.0 cm, are separated by 15.0 cm. If an object is placed 50.0 cm in front of the first lens, where is the final image formed?

• A) 10.0 cm before the first lens
• B) 25.0 cm before the second lens
• C) 25.0 cm after the second lens
• D) 50.0 cm after the second lens
• E) 100 cm after the second lens

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