Can a concave lens form an image of size two times that of the object ? Give reason.
A concave lens of focal length forms an image which is n times the size of the object. The distance of the object from the lens is
1. A real image is cast by a lens. What can be said about the magnification produced by the lens? 2. A concave mirror forms an upright image of an object placed at 20 cm from it. The size of the image is two times that of the object. Find the position of the image. [3 MARKS]