A converging lens with two convex surfaces has a front surface with radius of curvature of 10.0 cm;the back surface has radius of curvature of 20.0 cm,and it is made from material with an index of refraction of 2.50.What is the focal length of the lens?

Question

Quizplus · Accepted Answer

The focal length of a lens can be calculated using the lensmaker's equation: 1/f = (n - 1) * (1/R1 - 1/R2). Substituting the given values: n = 2.50, R1 = 10.0 cm, R2 = -20.0 cm, we find f = 4.44 cm.

A Converging Lens with Two Convex Surfaces Has a Front