What is meant by interference of light? (1 mark)Īns. No, there cannot be a kaleidoscope with a single reflecting surface it must have two or more reflecting surfaces. Is there a kaleidoscope with a single reflecting surface? (1 mark)Īns.
Each reflected image in a kaleidoscope is symmetrical to the image next to it. It can create beautiful patterns that are used by fashion designers. Law of reflection and white light is made up of seven colours and are the principles that guide the working of Kaleidoscopes. Kaleidoscope is an optical instrument, made up of two or more reflecting surfaces that are inclined towards each other. Can be used as a toy for entertainment. Creates beautiful patterns that are usually used by fashion designers. Some of the uses of kaleidoscope include: Kaleidoscope is an optical toy which consists of two mirrors placed at particular angles. As the mirrors in the tube get close, the symmetrical patterns will get better at the end. In a kaleidoscope, each reflected image is symmetrical to the image that appears next to it. In a kaleidoscope made of two mirrors, there will be four reflections of the slice in the images that appear at the end of the tube Therefore, the angle formed by a single slice or wedge in a circle would decide the number of reflections of the given slice. If the size of the wedge or the slice is large, then the angle it makes at the centre of the circle will also be large and vice-versa. Just like a pizza, which is circular in shape each triangle portion within the kaleidoscope is just like the part of that circle. This will be through the multiple reflections of the single slice appearing side by side. Now, if you place the slice of pizza within two mirrors that are kept adjacent to each other at an angle you will be able to see almost the entire pizza. In order to understand what happens in a kaleidoscope, imagine a pizza each slice of the pizza depicts the object put within the triangular area at the edge of the tube. gPlace the second triangle upside down so that there is enough space for plastic to move between the two transparencies.Īnd, once you are done with the making of kaleidoscope, you can design it beautifully with glitters, colours and so on. Attach another triangular transparent paper that is larger than the first one. Place the colored plastic pieces at the end of the kaleidoscope that has transparent paper. Take some small paper cuttings that can be placed on the transparent paper. Select the kind of plastic colour you would want to have inside the kaleidoscope. Step 5ĭraw another triangle, but this time make it 2 cm larger than the earlier one. Now, fix the paper into a separate place. Cut thin openings at the corners for easier folds. Step 3Īfter that, place the transparent paper at the edge of the Kaleidoscope. Sketch the small triangle that is present at the edge of the kaleidoscope to the transparency paper (keep 1 cm extra around the triangle for allowing folding of the paper). Make sure that it is solid and is taped at the exterior of the triangle. Get the three mirror pieces and roll them in the form of a triangle. Therefore, here are the steps that can help you in making a kaleidoscope. Kaleidoscope works on the principle of reflection. 
When white light passes through the coloured objects, most of this light is absorbed by the objects present in the Kaleidoscope. It is because of these reflections that beautiful patterns are formed. Thus, light rays hit one mirror surface after the other and several reflections take place within the kaleidoscope. There are several mirrors lined along the length of the tube within a kaleidoscope. White light consists of a combination of seven colours or VIBGYOR.When white light strikes the surface of a mirror, it gets reflected in a way that the angle of reflection equals the angle of incidence. The incident ray, the reflected ray and the normal all lie on the same plane.The Angle of Incidence will be equal to the Angle of Reflection.
Kaleidoscopes chiefly work on two main principles: These surfaces are tilted towards each other at a particular angle in order to obtain symmetrical patterns when seen from the other end.Ĭlass 12 Physics Chapterwise Questions Principles of Kaleidoscope Kaleidoscope is an optical instrument that is made up of two or more reflecting surfaces.
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