If the magnification produced by a lens is +2, then the image is :

What is the magnification produced by a concave lens of focal length 10 cm, when an image is formed at a distance of 5 cm from the lens?

Magnification is

Colour in a colour television is produced by a combination of three basic colours, they are :

The image of an object formed by a plane mirror is

In a convex lens, if the object is placed at 2F (twice of the focal length), the image formed will be -