. The type of lens used as a simple microscope
A: Binocular lens
B: Plano concave lens
C: Concave convex lens
D: Convex lens
- Simple microscope is a magnifying lens which is made up of convex lens of short focal length.
- It is an instrument used to view the smaller objects by magnifying it.
It is used in biology to study biological specimens like insects, algae, fungi etc.
It is used by jewelers to see fine parts of jewelry.
It is used by watchmakers to see small parts of a watch.
It is used to see the enlarged image of letters of a book, textures of fibers, or threads of a cloth.
Hence, the option is D, i.e. convex lens.