File:Convex lens - Object between focal point and optical centre.png - Wikimedia Commons
What is meant by optical centre of a lens? - YouTube
Why doesn't a ray of light passing through the optical centre of a lens deviate?
Solved] A ray of light passing through the optical centre of a conve
The centre of the lens is called:A. Principal focusB. Principal axisC. Optical centreD. None
Image formation by Convex and Concave Lenses - Future Study Point
CHARACTERISTICS OF LENSES
Electricity - detailed contents
7472_Spherical_Lenses-Q4.gif
For more information about thin spherical lens, define : (a) First principal focus (F1) (b) Second principal focus (F2) (c) Optical centre (C) (d) Focal length (f)