Question

What is a kaleidoscope? State the principle on which it is based.

Answer 1

A kaleidoscope is a tube-shaped optical instrument that is rotated to produce a succession of symmetrical designs by means of multiple mirror reflections. The constantly changing patterns are made by bits of coloured glasses present at one end of the tube. The kaleidoscope operates on the principle of multiple reflections, where several mirrors are placed at an angle of 60°(usually) to one another.