Question #2897d

1 Answer
Feb 22, 2016

It will be the lense with the lowest magnification on it.


The longer the focal length of the objective lense, the lower the magnification, because the primary image is allways formed at a set distance from the objective lens (usually about 230 mm). For a low power magnification (remember that #N=b//v#) we also need a longer object distance, so also a longer focal length.