It is refraction that makes ... not focused appear blurred. A lens is a specially shaped pieces of glass or transparent plastic, that is used to focus light. A convex lens is made from a ...

These allow for in-depth studies of optical transparency and refraction across the ... we show that concave as well as convex lens structures can be obtained at high precision by remelting the ...

NCERT Solutions for Class 10 Light - Reflection and Refraction ... both concave. (b) both convex (c) the mirror is concave and the lens is convex. (d) the mirror is convex, but the lens is ...