Final image is not brightly illuminated as some amount of light energy is absorbed by two successive reflections. The image is then reflected back into the bottom mirror. To create this article, 99 people, some anonymous, worked to edit and improve it over time. (2) A periscope is used by soldiers sitting in a trench (or bunker) to observe the enemy activities outside(over the ground). A periscope is defined as an instrument used for observing over, around or through an obstacle or object which is prevented by direct line of sight. However, the longer the periscope is, the smaller the image will be. This Lo… Don't use glue yet, since you might need to make adjustments to the mirror's position. To make a cardboard periscope, first cut the tops off 2 empty quart-sized milk cartons. Which mirror is used to make a periscope? Question 7 How can you show that white light consist of seven colours? Draw a diagram of the path a ray of light follows as it travels from an object, through the periscope, and into your eye. Do you think the periscope would work if the mirrors were at some angle other than 45 degrees? Adulting 101: Learn How to Raise Your Credit Score. A craft knife may be the easiest tool for cutting the hole, but should only be used with adult supervision, as it is very sharp. In. 7) A kaleidoscope produces hundreds of ever-changing coloured patterns (or designs). (2) One end of the cardboard tube is closed by an opaque disc (cardboard disc) having a small hole at its centre. Filed Under: Class 8, Light Tagged With: Characteristics of image formed by a plane mirror, dispersion of light, kaleidoscope, lateral inversion, multiple images, Periscope, sunlight, uses of periscope, uses of periscopes. Types of periscopes. Last Updated on March 20, 2019 By Mrs Shilpi Nagpal. Lightly score it with a craft knife to divide it into four sections, then fold it into a box and tape together. You cannot have a periscope without one or the other mirror. Your eye views the reflection in the bottom mirror. Question 8 What is meant by dispersion of light? The periscope is an instrument for observation, It consists of a tube with mirrors at each set parallel to each other at a 45-degree angle, with the addition of two simple lenses, and it depends on the occurrence of regular light reflection on the plane mirrors.. The seven colours of the spectrum of white light are: Violet, Indigo, Blue, Green, Yellow, Orange and Red. (1) A periscope consists of a long tube T having two plane mirrors M 1, and M 2 fitted at its two ends. A military submarines main weapon is the torpedo. Then, tape the cartons together to make one long box. By using a periscope, we can see the objects on the other side of a high wall which cannot be seen by us directly. Draw a diagram of the path a ray of light follows as it travels from an object, through the periscope, and into your eye. Disadvantages of periscope : 1. This means that the left side of our body becomes the right side in the mirror image whereas the right side of our body becomes left side in the mirror image. List the materials you think you will need: Telescoping Periscope You can tape two tubes or two homemade cardboard cartons together in the same way, to make a longer periscope. (5) The image formed by a plane mirror is erect. A Entity Relationship Diagram showing Periscope. It can be seen only by looking into the plane mirror. Ray diagram of periscope showing action of 7 1/2 psi of nitrogen introduction: 234: 4-64. A periscope is a device used on submarines to view above the water's surface when submerged. References. If too much light is coming through the "eye" end of your periscope, making it difficult to see the reflection, tape black construction paper over the outside edges of the hole.

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