Tutorial on Geometry of Image Formation (lenses), get better grade in exam.

Geometry of Image formation: lenses. Fundamentals and basics. get better score in exam. Easy learning. Illustrated animations. These videos use visual learning technique, which are compilation of knowledge that already exists all over the internet, I compiled them so the viewers can save their time watching these. geometry of image formation, lens, concave, convex, light beam, focus, converging, diverging, real image, virtual image, positive meniscus, negative meniscus, bi-convex, bi-concave, plano-convex, plano-concave, optical center, incident ray, emergent ray, refraction, center of curvature, mirror, reflection,