Physics
A ray of light incident at a point on the principal axis of a convex lens passes undeviated through the lens.
(a) What special name is given to this point on the principal axis?
(b) Draw a labelled diagram to support the answer in part (a).
Related Questions
Explain the optical centre of a lens with the help of proper diagram(s).
Define the term principal foci of a concave lens and show them with the help of proper diagrams.
Define the term principal foci of a convex lens and illustrate your answer with the aid of proper diagrams.
Define the term principal axis of a lens.