Give scientific reason. Simple microscope is used for watch repai… - Vidyadip

Question

Give scientific reason.
Simple microscope is used for watch repairs.

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Answer

A magnification of about 20 times is obtained by a simple microscope.
When an object is placed within the focal length of a convex lens, one gets a magnified and erect image of the object.
Thus, the watch repairer can see the minute parts of the watch more clearly with the help of a simple microscope than the naked eye, without any strain on the eye.
Hence, a simple microscope is used for watch repairs.

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