In a compound microscope,the focal length and | vedclass

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(C) In a compound microscope,the objective lens is placed very close to the object to form a real,inverted,and magnified image. To achieve high magnif

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small and large

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(C) In a compound microscope,the objective lens is placed very close to the object to form a real,inverted,and magnified image. To achieve high magnification and high resolving power,the objective lens must have a small focal length $(f_o)$. Additionally,to collect as much light as possible from the small object and to improve resolution,the objective lens is designed with a large aperture. Therefore,the objective lens of a compound microscope has a small focal length and a large aperture.

In a compound microscope,the focal length and the aperture of the objective lens used are respectively:

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