Question

Plane mirrors are arranged at an angle to get a number of colored images in :

• A. Periscope
• B. Kaleidoscope
• C. Telescope
• D. Thermoscope

Answer 1

The correct option is B Kaleidoscope

A) Periscope is an apparatus consisting of a tube attached to a set of mirrors or prisms, by which an observer (typically in a submerged submarine or behind a high obstacle) can see things that are otherwise out of sight.

B) Kaleidoscope is a toy consisting of a tube containing mirrors and pieces of colored glass or paper, whose reflections produce changing patterns when the tube is rotated. Here, Kaleidoscope plane mirrors are arranged at an angle to get a number of colored images.

C) Telescope is an optical instrument designed to make distant objects appear nearer, containing an arrangement of lenses, or of curved mirrors and lenses, by which rays of light are collected and focused and the resulting image gets magnified.

D) Thermoscope is an instrument that shows changes in the temperature of a substance by noting changes in the volume of the substance.