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A compound microscope is an instrument w...

A compound microscope is an instrument which consists of two lenses `L_1 and L_2`. The lens `L_1` called objective, forms a real, inverted and magnified image of the given object. This serves as the object for the second lens `L_2`, the eye piece. The eye piece functions like a simple microscope or magnifier. It produces the final image, which is inverted with respect to the original object, enlarged and virtual.
What types of lenses must be `L_1 and L_2`?

A

Both concave

B

Both convex

C

`L_1`- concave and `L_2`- convex

D

`L_1 `- convex and `L_2` - concave

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