If $l$ is the length of the object and $l'$ is the length of the image, magnification $m$ equals?

Question

Accepted Answer

$m = l'/l$

Answer

$m = l/l'$

Answer

$m = l \cdot l'$

Answer

$m = l + l'$

If lll is the length of the object and l′l'l′ is the length of the image, magnification mmm equals?