REFLECTION OF LIGHT
RULES FOR OBTAINING IMAGES FORMED BY SPHERICAL MIRRORS
The position of the image formed by spherical mirrors can be found by taking two rays of light coming from a point on the object which intersect each other to form an image. Following are the rules which are used for obtaining images formed by spherical mirrors.
1. A ray of light which run parallel to the principal axis, after reflection, passes through the principal focus F of a concave mirror, or appears to pass through the principal focus of a convex mirror.
2. A ray of light passing through the centre of curvature in a concave mirror or a ray of light going towards the centre of curvature of a convex mirror is reflected back along the same path.
3. A ray of light passing through the principal focus of a concave mirror or appearing to pass
through the principal focus of a convex mirror becomes parallel to the principal axis after
Test Your Understanding and Answer These Questions:
- What are the rules for obtaining images formed by spherical mirrors?