Defects of Lenses
Defects of Lenses: Overview
This topic covers concepts such as chromatic aberration, reducing/eliminating chromatic aberration, and methods to reduce/eliminate spherical aberration.
Important Questions on Defects of Lenses
Spherical aberration in a thin lens can be reduced by
For multiple lenses, spherical aberrations can be corrected by
Describe cheapest method to reduce spherical aberration in lenses
Describe spherical aberration for spherical lenses. What are different ways to minimise or eliminate it.
What do you understand by the term 'spherical aberration'?
Explain the cause of chromatic aberration in lenses in brief.
By keeping lenses in contact with each other we can remove chromatic abberation, for it :-
A plano-covex lens is being used to produce a real image of a distant object on its principal axis. What can we say about spherical aberration in the lens?
Which eye piece satisfies the condition for spherical aberration:
