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Huygen’s Principle When we throw a small stone in a calm water pond, waves propagate around the rebound point. Every point on the surface starts oscillating with time. The photograph of the page at any given moment will show the circular rings above which the disturbance is maximum. Apparently, all the points in this type … Read more

Function of simple microscope     A simple magnifier or simple microscope has a converging lens of short focal length. To use this type of lens as a microscope, the lens is placed near the object at one focal length or less than the focal length and on the other hand the eye is kept … Read more

Human Eye       The human eye is a very valuable and sensitive sense organ. It enable us to see the wonderful world and colors around us. The human eye is like a camera. A real, inverted and small image is formed on the retina located at the back of the eye.   Accommodation … Read more

What is light  Light is a medium with the help of which we are able to see any objects. In the absence of light, we cannot see any object because when light falls on an object, it gets reflected and reaches our eyes, then we feel the presence of that object.   Reflection of light … Read more