Description

For simulation of image formation in convex lenses. Use the control menu, to change the lens focus, to move the object and adjust the object height.

Observe that the focal length is positive here.

For visualising and understanding the ray diagram of the convex lens better, you can select pre-set object distance for the lens with focal length 5 cm.

Lens Formula

$$\frac{1}{f} = \frac{1}{v}-\frac{1}{u} $$ \[\text{or}\] $$\frac{1}{v} = \frac{1}{f}+\frac{1}{u} $$

    ➤ Focal length of convex lens (converging lens) are positive.

    ➤ Parallel light rays converge at the principle focus after getting refracted from the lens.

Magnification

$$m=\frac{v}{u} $$

    ➤ Virtual, erect, magnified image is obtained when the object is placed between the focal length and the lens .