The power of a lens in diopters is
A
3f
B
\(\frac{1}{\text{f}}\)
C
2f
D
f
Verified Correct Answer: B.
Physical Principles & Numerical Solution
Lens power P = 1/f, where f is focal length in meters; unit is diopter.
Source: Myschool Past Questions Archive (Record #74348)