Choose the correct option regarding compound microscope:

Options

A. Compound microscope consists of two convergent lenses. Lens (of focal length `f_(0)`) facing the object is called objective or field lens while the lens (of focal length `f_(e)`) facing the eye, eye-piece or ocular. The objective has a smaller aperture and smaller focal length than eye-piece.
B. For a microscope, magnifying power or angular magnification is minimum when final image is at `oo` and maximum when final image is at `D`.
C. For a given microscope, magnifying power `(MP)` for normal adjustment remians parctially unchanged if objective and ey-piece are interchanged. In normal setting, `f_(0)` and `f_(e)` should be smaller to have grater `M.P.`
D. All options are correct.

Answer

D