PhysicsFunction of an Eye in terms of Lens We have known earlier that there is a convex lens just behind the pupil of the eye which is called eye lens. It is necessary…
PhysicsExplain on Human Eye in Terms of Lens The structure and functions of human eyes are similar to a camera. We know that photograph is taken by keeping the object before a camera.…
PhysicsAdvantage of Having Two Eyes If we see an object by our two eyes we can only see a single object. Though each eye forms individual images on their own…
PhysicsExplain Least Distance of Distinct Vision From our daily experience, we see that the closer the object is to the eyes the clearer it is to see. But, there is a…
PhysicsExplain on Accommodation of Eye Aqueous humour and Vitreous humour: The saline watery fluid that fills up the space between the eye lens and cornea is called aqueous humour. On…
PhysicsExplain Sign Convention All distances are to be measured starting from the optical centre of the lens. All real distances are positive and real distances means the distance…
PhysicsWhat is Power of Lens Suppose there are two convex lenses. The focal length of the fast one is greater and the focal length of the second one is smaller.…
PhysicsExplain Image of an Extended object Concave Lens Suppose LOL1 is a concave lens. FOF’ is its principal axis, O is its optical center and F is its principal focus. An extended object…
PhysicsExplain Image of Extended object of Convex Lens Suppose LOL1 is a convex lens. FOF′ is its principal axis, O is its optical center and F is its principal focus. An extended object…
PhysicsRules of Drawing Ray Diagram in Lens Rules of Drawing Ray Diagram in Lens Rays of the light incident in a direction through the optical center of a lens are refracted along…