Question: Albert is nearsighted, and without his eyeglasses he can focus only on objects less than 2.2 m away. (a) Are Albert's eyeglasses concave or convex?

Albert is nearsighted, and without his eyeglasses he can focus only on objects less than 2.2 m away.

(a) Are Albert's eyeglasses concave or convex? Explain.

(b) To correct Albert's nearsightedness, his eyeglasses must produce a virtual, upright image at a distance of 2.2 m when viewing an infinitely distant object. What is the focal length of Albert's eyeglasses?

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