Question

state the three rule of image formation in lens and mirror​

Answer 1

Answer:

An incident ray which is parallel to the optic axis is refracted through the image focus $F_i$ of the lens.

An incident ray which passes through the object focus $F_o$ of the lens is refracted parallel to the optic axis.

An incident ray which passes through the optic centre $O$ of the lens is not refracted at all.

Answer 2

Answer:

The image produced by a converging lens can be located using just three simple rules:

• An incident ray which is parallel to the optic axis is refracted through the image focus of the lens.
• An incident ray which passes through the object focus of the lens is refracted parallel to the optic axis.