Lens and Mirror Difference
The lens is a transparent thick material (made of glass/plastic) that causes light rays to bend in a particular way as they pass through it, be it converging the rays to a specific point or diverging them away from the particular point.
A mirror is an object that helps us see our image and the image behind us.
So, what is the difference between lens and mirror? Let’s observe this by the images of these:
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Lens and mirrors have differences in their image formation. In this article, we will learn the lens and mirror difference.
Difference Between Lens and Mirror
Difference Between Mirror and Lens
The difference between mirror and lens can be better understood by their sign conventions followed by their varying image formation. Firstly, we will have a look at their sign conventions followed by the ray diagram of objects placed at varying positions in both the mirror and the lens.
Sign Convention of a Mirror:
Sign Convention of the Lens:
Above the principal axis, the height is considered positive, while below the principal axis, the height is considered negative.
Objective distance is considered positive, the real image distance is considered positive, and virtual image distance is considered negative.
Magnification of the real image is considered negative and that of the virtual image is considered positive.