Choose the correct option regarding compound microscope: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.

Choose the correct option regarding compound microscope:A. Compound mi

1.	Choose the correct option regarding compound microscope: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» Correct Answer - D

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(a) An object is seen through a simple microscope of focal length `12cm`. Find the angular magnification produced if the image is formed at the near point of the eye which is `25cm` away from it. (b) A `10D` lens is used as a magnifier. Where should the object be placed to obtain maximum angular magnification for a normal eye (near point `= 25cm)`?

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