The focal lengths of objective and the eyepiece of a compound microscope are `f_(o)` and `f_(e)` respectively. Then,
The focal lengths of objective and the eyepiece of a compound microscope are `f_(o)` and `f_(e)` respectively. Then,
A. `f_(o)=f_(e)`
B. `f_(o)ltf_(e)`
C. `f_(o)=f_(e)`
D. None
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