Answer:
Shorter focal length eyepiece increases magnification and longer focal length eyepiece decreases magnification
Explanation:
Magnification equation is given by
M = [tex]\frac{f_{o} }{f_{e} }[/tex]
where
[tex]f_{o}[/tex] is the focal length of the objective
[tex]f_{e}[/tex] is the focal length of the eyepiece
Assuming that the focal length of objective is constant, we can derive relation between Magnification power and focal length of eyepiece as
M α [tex]\frac{1}{f_{e} }[/tex]
Above derivation shows that the magnification is inversely proportional to the focal length of eyepiece
Hence shorter focal length eyepiece increases magnification and longer focal length eyepiece decreases magnification
