Question: A person is nearsighted and can clearly focus on objects that are no farther than 3.0 m away from her eyes. She borrows a friends

A person is nearsighted and can clearly focus on objects that are no farther than 3.0 m away from her eyes. She borrows a friend’s glasses and fi nds that she can now focus on objects as far away as 4.5 m. What is the focal length of the glasses? Do they use converging lenses or diverging lenses? Assume the glasses are placed 2.0 cm in front of her eyes.

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