STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
MORPHOLOGY OF ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a device used to study the perimeter
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a device used to heat the earth
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a device used to measure
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a device used to see things around that are otherwise out of sight
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Detailed explanation-1: -Periscope is used by a soldier while sitting in a bunker to see the things outside. Periscope make use of two plane mirror. Additional Information: Periscope: A periscope is an instrument which helps in viewing the objects which are not in the line of sight of the observer.
Detailed explanation-2: -In the military periscopes are used to observe from their hiding position. The main disadvantage of a periscope is that it can be used by one person at a time. Tanks and armored vehicles use the periscope to inspect the surrounding.
Detailed explanation-3: -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. It consists of an outer case with mirrors at each end at 45° angle. These mirrors are placed parallel to the surface.
Detailed explanation-4: -Periscopes are used in order to see the objects that are not in direct line of sight. Its working is based on the laws of reflection. It consists of a set of parallel plane mirrors as shown in the diagram.