LENSES
THE IMAGE BUILDERS
MICROSCOPE
TELESCOPE
CAMERA
FILM PROJECTOR
SLIDE PROJECTOR
EYE
CONTACT LENSES
HAND LENS
LENSES
CONVEX (CONVERGING) LENS
CONCAVE (DIVERGING) LENS
THEY ARE PARTS OF SPHERES
LENSES CAN BE CONSIDERED AS A COMBINATION OF PRISMS
ANATOMY OF CONVEX LENS
FOR CONVEX LENSES
Optic centre-The geometric
centre of thelens
Optic centre-The geometriccentre of the
lens
Object beyond 2F
Object at 2F
Object between2F and F
FOR AN EXTENDED OBJECT