What Is the Power of the Lens That Has a Focal

question 69

Multiple Choice

What is the power of the lens that has a focal length of 40 cm?

• A) -2.5 diopters
• B) -4.0 diopters
• C) +4.0 diopters
• D) +2.5 diopters
• E) +2.7 diopters