Question
Sun March 04, 2012 By: Jishnu Jayachandran

Why is the focal length of the objective lens of a compound microscope kept quite small?

Expert Reply
Sun March 04, 2012
As the  magnifying power of compound microscope is inversely proportional to the focal length of the objective lens.
Hence , smaller is the focal length, higher is the magnifying power.
and smaller is the focal length , higher is the resolving power.
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