Describe principle and working of a periscope ?
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Answers
Working Principle
A periscope works on the Laws of Reflection which states that the light from the object falls on one mirror at a 45o angle from the object and is reflected. This reflected light then falls on another mirror and is again reflected until it reaches the human eye.
Answer:
A periscope works on the basis of laws of reflection of light. Any object in the line of sight reflects the light making it visible in the periscope.
The mirrors are placed at an angle of 45° such that when light falls on one of the mirrors, it gets reflected back making it fall on the other mirror which further gets reflected back to the observer’s eyes. But in more complex periscopes, prisms are used in place of mirrors. The instrument does not produce any magnification and crossline images.
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