I would strictly recommend, not to go in deep for this type of questions. Just remember these two formulas. Actually Aberration are a type of loss in optics. And we always want to ...
all other tutors gave you yours answer,I want to tell you about chromatic aberration,the effect produced by the refraction of different wavelengths of light through slightly differ...
i) The lens combination acts
as an achromatic system if
1 2
2
f f D
+
= , where D is
the distance between the
lenses and f1 and f2 are the
focal length of the two
l...