Q.

A simple microscope consists of :

A. a short focus convex lens
B. a long focus convex lens
C. a short focus concave lens
D. a long focus concave lens
Answer» A. a short focus convex lens
Explanation: Simple microscope - light microscope consisting of a short focus single convex lens is used to produce an enlarged image. The magnifying glass was invented by Roger Bacon in 1250. In the original 'simple' microscopes, a single light path went through the object viewed and one lens, increasing the visibility of the object by some amount (magnification).
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