A converging lens always has a
A)large index of refraction.
B)small index of refraction.
C)focal length greater than zero.
D)focal length less than zero.

Question

Quizplus · Accepted Answer

A converging lens always has a focal length greater than zero. This is because a converging lens is thicker in the center than at the edges, and this shape causes light rays to bend inward towards a focal point. This focal point is located a distance away from the lens, and the distance is the focal length. The index of refraction of the lens material does not need to be considered when determining the focal length of a lens.

A Converging Lens Always Has a