This is basic beginners course to understand about image formation by lenses and mirror. This course includes rules for image formation by convex, concave lens and mirror. This also includes image formation by plane mirror. Basics of magnification. So let’s play with lenses and mirrors. This provides you a basic knowledge for understanding advance level physics. How lenses are made. About biconcave and biconvex lenses. Sign conventions which are essential for doing numerical are covered in this topic.