Question

The magnification 'm' produced by a convex lens when the object is placed at a distance 2f from the lens is given by?

• A. m = +1
• B. m=-1
• C. m = -2
• D. m = +2

Answer 1

Answer:

B. m=-1

• When an object is placed at a distance equal to twice the focal length (2f) from a convex lens;

• The image is inverted and the magnification is -1.