|
Title: The focal length of a lens is 5 m. What is the refractive power of this lens in Post by: ppk on Feb 16, 2012 The focal length of a lens is 5 m. What is the refractive power of this lens in diopters?
A) 0.1 diopters B) 0.2 diopters C) 0.3 diopters D) 0.4 diopters E) 0.5 diopters Title: Re: The focal length of a lens is 5 m. What is the refractive power of this lens in Post by: sarah! on Mar 5, 2012 B
|