is placed behind the center of curvature(beyond C), a real and inverted image is formed between the center of curvature and the principal focus. The size of the image is the smaller than that of the object (Figure . ). F F O N f M A ´ C C A B B ´ Figure .
Object placed beyond C (>2F) Object placed at C When an object is placed at the center of curvature, a real and inverted image is formed at the other center of curvature. The size of the image is the same as that of the object (Figure . ). Optics Figure.
. Object placed at C F F O N M A ´ A B B ´ C C Object placed between F and C When an object is placed in between the center of curvature and principal focus, a real and inverted image is formed behind the center of curvature. The size of the image is bigger than that of the object (Figure . ).
Figure . Object placed between F and C F F O N M A B C C A ´ B ´ Object placed at the principal focus F When an object is placed at the focus, a real image is formed at infinity. The size of the image is much larger than that of the object (Figure . ).
Figure . Object placed at the principal focus F C F F N M A B C O Object placed between the principal focus F and optical centre O When an object is placed in between principal focus and optical centre, a virtual image is formed. The size of the image is larger than that of the object (Figure . ).
Q O B A F C A f B F C Figure . Object placed between the principal focus F and optical centre O . APPLICATIONS OF CONVEX LENSES . Convex lenses are used as camera lenses .
They are used as magnifying lenses . They are used in