Question

write the rules for image formation by concave mirror and convex mirror?​

Answer 1

Answer:

A simpler method of determining a reflected ray is needed. The simpler method relies on two rules of reflection for concave mirrors. They are: Any incident ray traveling parallel to the principal axis on the way to the mirror will pass through the focal point upon reflection.

Any incident ray traveling parallel to the principal axis on the way to a convex mirror will reflect in such a manner that its extension will pass through the focal point.