Compare Two Diverging Lenses Similar Except That Lens B Is

Multiple Choice

Compare two diverging lenses similar except that lens B is rated at 20 Diopters, whereas lens A is rated at 10 Diopters. The focal length of lens B is

A) twice the focal length of lens A.
B) 1/ of the focal length of lens A.
C) one-half of the focal length of lens A.
D) one-fourth of the focal length of lens A.
E) four times the focal length of lens A.