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 your answer in part (a)

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Solution

(a) A ray of light passing through the optical center of a lens will emerge without any deviation.

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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 your answer in part (a)

(a) A ray of light passing through the optical center of a lens will emerge without any deviation.

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 your answer in part (a)