A lens can be converging (convex) or diverging (concave). The centre of the lens is called the optical centre C. In a ray diagram, a converging lens is drawn as a vertical line with outward facing ...

We compare and contrast concave and convex lenses by drawing ray diagrams. In this Closer Look segment on Lenses, we compare and contrast concave and convex lenses by drawing ray diagrams and ...

(e) The image formation by a concave mirror when the object is at infinity. Question. 31 Draw ray diagrams showing the image formation by a convex lens when an object is placed (a) Between optical ...

(b) only concave. (c) only convex. (d) either plane or convex ... How far is the object placed from the lens? Draw the ray diagram. The point of intersection of these refracted rays gives the ...