Problem 64GP

What is the magnifying power of a lens used as a +4.0-D magnifier? Assume a relaxed normal eye.

Step-by-step solution

Step 1 of 1

Given

The magnifying power of a lens is P = +4 0 D

From the definition of the magnifying power of the lens,

Here f is the focal length of the lens. Therefore the focal length of the lens is:

The magnification of the lens is

Here the near point for a relaxed normal eye

Therefore the magnification of the lens is: