Virtual Image

A virtual image is an optical image formed by the apparent intersection of light rays that do not actually converge at the point where the image appears to be. It is formed when light rays appear to diverge from a point behind a mirror or lens.

Formation of Virtual Images

Virtual images are formed when the light rays appear to diverge from a point behind the mirror or lens. In the case of a mirror, the virtual image is formed when the reflected rays appear to diverge from a point behind the mirror, giving the impression that the light is coming from that point. In the case of a lens, the virtual image is formed when the refracted rays appear to diverge from a point behind the lens.

Characteristics of Virtual Images

• Virtual images cannot be projected onto a screen.
• They are always located behind the mirror or lens.
• They are always upright, regardless of the orientation of the object.
• Virtual images are formed when the object is located within the focal point of a concave mirror or diverging lens, or when the object is located beyond the focal point of a convex mirror or converging lens.

Study Guide

To understand virtual images better, consider the following points for study and practice:

1. Learn the difference between real and virtual images and the conditions under which each is formed.
2. Practice drawing ray diagrams for mirrors and lenses to understand how virtual images are formed.
3. Understand the concept of focal points for mirrors and lenses, and how they relate to the formation of virtual images.
4. Explore practical examples of virtual images in everyday life, such as in mirrors, lenses, and optical devices.
5. Work through problems and exercises related to virtual images to solidify your understanding of the topic.