An Object Is 20 Cm to the Left of a Lens

question 5

Multiple Choice

An object is 20 cm to the left of a lens of focal length +10 cm.A second lens, of focal length +12.5 cm, is 30 cm to the right of the first lens.The distance between the original object and the final image is:

• A)0 cm
• B)28 cm
• C)50 cm
• D)100 cm
• E)infinite

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