What is the focal length of the glasses

Reference no: EM13666002

Consider a person that is nearsighted and can clearly focus on objects that are no farther than 2.8 m away from her eyes. Now suppose she borrowed a friend's glasses that make things worse; that is, the person can now focus only on things that are within 1.8 m away. Suppose the glasses are placed 2.2 cm in front of her eyes. What is the focal length of the glasses?

Reference no: EM13666002

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