Depending on the density of the material, light will reduce in speed as it travels through ... lens is a specially shaped pieces of glass or transparent plastic, that is used to focus light. A ...

An optical lens is a transparent optical component used to converge or diverge light emitted from a peripheral object. The transmitted light rays then form a real or virtual image of the object.

Read more: Refraction of Light Question ... Cover one half of the convex lens with black paper or tape, ensuring that no light passes through that portion. Complete Image: You should observe ...