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…
The working of a lens is based on the refraction of light rays when they pass through it . A lens is a piece …
Optically Rarer medium : in which the speed of light is more is known as optically Rarer medium . optically d…
Definition of Refraction of light : The change in direction of light when it passes from one medium to anothe…