A simple magnifier has a focal length of 5.9 cm.What is the maximum angular magnification of the lens?
A)5.2
B)4.2
C)3.2
D)3.6

Question

​A simple magnifier has a focal length of 5.9 cm.What is the maximum angular magnification of the lens?
A)​5.2
B)​4.2
C)​3.2
D)​3.6

Quizplus · Accepted Answer

The maximum angular magnification (M) of a lens is given by the formula M = 1 + (25/f), where f is the focal length in centimeters and 25 cm is the near point of the average human eye. Substituting the given focal length of 5.9 cm into the formula gives M = 1 + (25/5.9) = 1 + 4.237 = 5.237, which rounds to 5.2, making choice A correct.

​A Simple Magnifier Has a Focal Length of 5

A Simple Magnifier Has a Focal Length of 5