Notes and Study material for Exams
Relation between focal length and redius of curvature The focal length (f) of a lens is the distance between the center of the lens and the point at which the reflected Light, of a beam of light travelling parallel to the center line, meets the center line (principal axis). The radius of curvature (r) is … Read more
Relation between focal length and redius of curvature The focal length (f) of a lens is the distance between the center of the lens and the point at which the reflected Light, of a beam of light travelling parallel to the center line, meets the center line (principal axis). The radius of curvature … Read more
Question:Defect of vision in which far objects appear blurred but near objects are seen clearly is >>>Myopia >>>Hyperopia >>>Astigmatism >>>Cataracts >>>option1 Question:Defect of vision in which there is difficulty with near vision but far objects can be seen easily is >>>Myopia >>>Hyperopia >>>Astigmatism >>>Cataracts >>>option2 Question:Defect of vision in which some Light rays ared focused … Read more
–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> , Construction working, uses, ray diagram Simple Telescope A simple working telescope requires nothing more than a pair of lenses mounted in a tube. The lens in front, known as the objective, focuses an image; the lens in back, known as the eyepiece, magnifies the image. … Read more