Problem: Without a corrective lens, a farsighted person can’t focus clearly on objects that are closer to her eye than 75 cm. What is the focal length of the contact lens that will allow this person to see clearly objects that are 25 cm from her eye?(a) + 18.75 cm(b) - 18.75 cm(c) + 37.5 cm(d) - 37.5 cm(e) + 75.0 cm(f) - 75.0 cm(g) none of the above answers

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Problem Details

Without a corrective lens, a farsighted person can’t focus clearly on objects that are closer to her eye than 75 cm. What is the focal length of the contact lens that will allow this person to see clearly objects that are 25 cm from her eye?

(a) + 18.75 cm

(b) - 18.75 cm

(c) + 37.5 cm

(d) - 37.5 cm

(e) + 75.0 cm

(f) - 75.0 cm

(g) none of the above answers

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