Chapter 25, Problem 6Q

To determine

If the person in the figure is farsighted or nearsighted.

Answer to Problem 6Q

Solution:

The person is nearsighted.

Explanation of Solution

In the figure person’s face is seen narrow through the glasses.

And it is given that one can identify whether people are farsighted or nearsighted by looking at the width of their face seen through their glasses.

The person in the figure is nearsighted.

For correcting nearsightedness diverging lenses are used, and for correcting farsightedness converging lenses are used.

In the figure, person’s face is seen narrow through the glasses. If a person’s face is seen narrower through the glasses, then the image of the face produced by the lenses is smaller than the face, virtual, and upright, which means the lenses must be diverging type. Since diverging lens are used for correcting nearsightedness, the person is nearsighted.