Physics Viva Questions Class 12: The Central Board of Secondary Education (CBSE) practical exams are about to start, and it's time for Class 12 students to start revising the viva questions. The ...

A double-convex lens is compose of two convex surfaces, has a positive focal length. Normally Bi-Convex lenses are most suitable where the object and image are on opposite sides of the lens, and are ...

KnowHOW team explains: A magnifying glass is a convex lens ? both its surfaces are curved outward. When light ray passes through such a lens, having arrived along a direction parallel to its axis, ...