Watch repairers use a magnifying glass.
Answers
Answer:
Because,a magnification of about 20 times is obtained by the convex lens of small focal length used in a simple microscope. Therefore, it is used by watch repairers to see the minute parts of the watch clearly without causing any strain to the eyes.
Answer:
Hope this answer helps you!
Explanation:
(1) When an object is placed within the focal length of a magnifying glass or simple microscope (convex leps ), its larger and erect image is obtained on the same side of the lens as that of the object. <br> (2) By adjusting the distance between the object and the lens, the image can be obtained at the minimum distance of distinct vision. Thus, a watch repairer can see the minute parts of a watch more clearly with the aid of a magnifying glass (a simple microscope) than with the naked eye, without any stress on the eye. Hence, watch repairers use a magnifying glass (a simple microscope) while repairing the watches.