Question

To read very small letters or for the watch-makers to see very small parts

Answer 1

Answer:

The watch maker uses a convex lens.

Explanation:

Watch- maker’s glass is the lens used by the watchmaker to help him mechanize a watch. You should know that the distance between the eye of a watchmaker and his watch is very less.

Watch maker’s use glass to magnify the small parts of the watch. And we know that the magnifying lens is a convex lens. Thus the watch maker uses a convex lens.

Answer 2

Answer:

Watch- maker use glass to magnify the small parts of watch. and we know that the magnifying lens is convex lens. thus the watch maker uses Convex lens.