If the strength of a lens is the reciprocal of its focal length (1/f ), which of the following lenses will have the greatest strength?

A. A lens with a focal length of 1 mm
B. A lens with a focal length of 100 mm
C. A lens with a focal length of 0.1 mm
D. A lens with a focal length of 1cm


Answer: C

Biology & Microbiology

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