Question

write down the rules that are necessary to be followed for a drawing image formed by spherical Mirrors?​

Answer 1

Answer:

To draw the ray diagram for an image formed by a spherical mirror, we have to take two rays from the top of the object.

One should be parallel to the Principal Axis(PA), and the other should pass through Center of Curvature(C) .

The two rules used are :

1) A ray parallel to PA passes through the Focus after reflection.

2) A ray passing through C is reflected back in the same direction.

Answer 2

Answer:

The 4 important rules for representation of images formed by spherical mirrors are as follows :

1. A ray parallel to the principal axis, after the reflection will always pass through the principal focus in case of a concave mirror. And in case of a convex mirror, it would appear to diverge from the principal focus.
2. A ray passing through the principal focus of a concave mirror all array which is directed towards the principal focus of a convex mirror, after reflection will emerge parallel to the principal axis.
3. A ray which is passing through the centre of curvature of a concave mirror, will reflect back along the same path. And in convex mirror, a ray which is directed towards the centre of curvature of a convex mirror, will also be reflected back along the same path.
4. A Ray incident obliquely to the principal axis on a concave mirror or a convex mirror, will reflect back with the equal angle that is by following the laws of reflection at the point of incidence.