Thin Lenses: a Convex Lens Has a Focal Length F

Multiple Choice

Thin lenses: A convex lens has a focal length f. An object is placed between infinity and 2f from the lens along a line perpendicular to the center of the lens. The image is located at what distance from the lens?

A) farther than 2f
B) 2f
C) between f and 2f
D) f
E) between the lens and f