Can someone explain how they got 60? A lens of focal length +15.0 cm is 10...

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Can someone explain how they got 60?

A lens of focal length +15.0 cm is 10 cm to the le

Answer 1

Answer #1

A lens of focal length +15.0 cm is 10 cm to the left of a second lens of focal length-15.0 cm (a) Where is the final image of

Answer 2

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