How does a kaleidoscope work?

Working of a Kaleidoscope
 It consists of two or more reflecting surfaces. These surfaces are tilted towards each other at a certain angle to get symmetrical patterns when viewed from the other side. Colored pieces of glass are present in the tube that consists of reflecting surfaces. By rotating this tube, symmetrical images are created.  

The principle used in the kaleidoscope is the law of reflection. When a white light, which is a combination VIBGYOR, hits the surface of the mirror, it gets reflected at an angle such that the angle of incidence is equal to the angle of reflection. Because of these multiple reflections, beautiful images are created.