Chapter 13, Problem 7TE

Hold a pocket mirror at almost arm’s length from your face and note the amount of your face you can see. To see more of your face, should you hold the mirror closer or farther, or would you need a larger mirror? (Try and see!)

Solution

To determine: The position of the pocket mirror placed at almost arm’s length from the face to see the more area of the face.

Answer:

The position of the mirror should be adjusted gradually farther from the face to see the more area of the face.

Explanation:

The reflecting area of the pocket mirror is small to see the face, so if one has to see more of his/her face then one has to adjust the distance from the mirror and more the distance one has from the mirror the smaller will be the image formed in it.

The large mirror covers a large area of the face, so if someone uses the large mirror, then he/she can view the image more clearly and can focus on small spots on his face. Using the pockets mirror also allow one to see his whole image and for that, it should be adjusted father away to see more area of his face but the small spots from a distance is not clearly visible.

Conclusion:

Therefore, the position of the mirror should be adjusted gradually farther from the face to see the more area of the face.