An interesting model which enables you to see the real image without screen. Also helps to study the nature and position of image formed by a concave mirror when the object is at 'c', in between 'c' and 'f' and beyond 'c'.
Apparatus consist of concave mirror fitted at one end of a plastic tube. The other end of the tube is open. A small flower fixed in another small metal assembly is placed at the open end of the tube. This flower assembly can be moved in and out so as to change the position of the object.