The focal length of the objective of a microscope is $f_o$ and that of the eye piece is $f_e$. The aperture of objective is $d_{o}$ and that of eye piece is $d_{e}$. Which of the following relation is correct?

$f_{o}<f_{e}, d_{o}<d_{e}$

The correct answer is Option (2) → $f_{o}<f_{e}, d_{o}<d_{e}$

focal length of objective $(f_o)$ is less than the focal length of eyepiece $(f_e)$.

i.e., $f_{o}<f_{e}$

Aperture of the objective $(d_o)$ is greater than the aperture of the eyepiece.

i.e., $d_{o}<d_{e}$