Question
Easy
Solving time: 2 mins
Describe the working of a “kaleidoscope” and a “periscope”.
Text solutionVerified
A kaleidoscope works by reflecting light. Light travels in a straight line. When light bumps into something it changes direction. If light bumps into something shiny it reflects back in the direction it came from.
A periscope is an optical instrument that uses a system of prisms, lenses or mirrors to reflect images through a tube. Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube.
A periscope is an optical instrument that uses a system of prisms, lenses or mirrors to reflect images through a tube. Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube.
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Question Text | Describe the working of a “kaleidoscope” and a “periscope”. |
Topic | Light |
Subject | Science |
Class | Class 7 |
Answer Type | Text solution:1 |
Upvotes | 133 |