A convex lens has focal length f. An object is located at infinity. The image formed is located
A)at infinity.
B)at 2f.
C)between f and 2f.
D)at f.
E)between the lens and f.

Question

Quizplus · Accepted Answer

When an object is located at infinity, the rays of light coming from it are parallel to the principal axis. A convex lens focuses these parallel rays to a point on the principal axis at its focal length, f. Thus, the image is formed at the focal point, f.

A Convex Lens Has Focal Length F