CBSE Tutorials

THE HUMAN EYE The human eye is one of the most valuable and sensitive sense organs, which enable us to see the colourful world around us. It is just like a photographic camera. The lens system of the eye forms an image of the object on a light sensitive screen. STRUCTURE OF THE EYE The…

Electric Lines of Force   (1) Definition : The electric field in a region is represented by continuous lines (also called lines of force). Field line is an imaginary line along which a positive test charge will move if left free. Electric lines of force due to an isolated positive charge, isolated negative charge and…