Question 1 of 151
A doctor prescribes a corrective lens of power +1.5 D. What is its focal length, and is it diverging or converging?
f » +0.67 m, converging
○ f » -0.67 m, diverging
○ f = +1.5 m, diverging
○ f = -1.5 m, converging
Show explanation
f = 1/P = 1/1.5 » +0.67 m; since the focal length is positive, this is a converging (convex) lens. — Examisthan.com
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