Question

A convex (converging) lens produces a real, inverted image of an object that is magnified 2.40 times when the object is 35.0 cm from the lens. What is the focal length of the lens?

Answer 1

f = -60 cm, this means tha the focal point is on the same side as the side where the object is located.

Step-by-step explanation:

let u be the distance from the lens to the object and u = -35 cm, v be the distance from the lens to the image and m is the magnification and m = -v/u and f is the focal point.