Define Virtual Image

When light passes through a converging lens, it is bent towards the axis at both surfaces, resulting in a unique property known as a virtual image. In this article, we will delve into the definition and properties of virtual images formed by converging lenses.

As noted earlier, rays from a light source placed at the focal point of a converging lens emerge parallel from the other side of the lens. This phenomenon is a result of the shape of the lens, which causes light to be bent towards the axis at both surfaces due to the difference in refractive indices between the lens and air.

The distance from the center of the lens to the focal point is known as the focal length (ƒ) of the lens. The law of refraction governs this process, ensuring that rays entering the lens are refracted towards the perpendicular, only to be bent away from it as they exit.

A virtual image is formed when light rays converge at a single point on the opposite side of the lens, creating an optical illusion where an object appears to be located behind the lens. This type of image is often seen in everyday life, such as when using a magnifying glass or looking through a camera lens.

The properties of virtual images are crucial in understanding how converging lenses form images. By reviewing the terms focal point, focal length, object distance, image distance, concave, convex, converging, and diverging from the Reflection section, we can better comprehend the behavior of light as it passes through these types of lenses.

In conclusion, a virtual image is an optical phenomenon where light rays converge at a single point on the opposite side of a converging lens. This property allows us to create powerful optical instruments such as cameras and telescopes, further emphasizing the importance of understanding the principles governing light and its interaction with matter.

Define virtual image.