class 10
Defects of vision and their correction
The ability to see is called vision. It is also called eyesight. Sometimes the eye of a person cannot focus t…
The ability to see is called vision. It is also called eyesight. Sometimes the eye of a person cannot focus t…
An eye can focus the images of the distant objects as well as the nearby objects on its retina by changing th…
There are similar rules for constructive ray-diagrams for obtaining image with concave lenses. Rule 1. A ray …
The image is formed at that point where at least two refracted light rays meet ( or appear to meet ) . Rules …
The working of a lens is based on the refraction of light rays when they pass through it . A lens is a piece …