Question

Why do we need ray diagrams? What rules should be followed while drawing ray diagrams?

Answer 1

Need for ray diagrams

1. The image formation by spherical Mirrors can be easily understood with the help of a diagram.
2. Ray diagrams are used to determine the location and position of the image, formed by convex and concave mirrors.
3. Provide clear and exact location of images.

Rules should be followed while drawing ray diagrams

1. To draw ray diagram, take at least two rays of convenience, which originate from the same point of the object and whose path can be traced after refraction.
2. Always keep the object on the left side in front of the reflecting surface.
3. Always place the object vertically upright so that it is perpendicular to the principal axis.

An object can be described by an infinite number of rays but, only two rays are taken from the same point of the object to find the position and nature of the image formed by a spherical mirror.