Question
Physics Question on Ray optics and optical instruments
Chromatic aberration of lens can be corrected by
A
providing different suitable curvature to its two surfaces
B
proper polishing of its two surfaces
C
suitably combining it with another lens
D
reducing its aperture
Answer
suitably combining it with another lens
Explanation
Solution
The chromatic aberration formed by a convex lens is considered positive and that by a concave lens is considered negative, as they have got exactly oposite characteristics. So the chromatic aberration formed by one lens can be nullified by the suitable use of the second lens.