Optimizing Mirror Widths for Periscope Design

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The discussion focuses on determining the ratio of the minimum widths of two mirrors in a periscope, given the distances between the mirrors and the observer. It emphasizes that the mirrors' role is to redirect light, allowing the observer to see objects positioned higher than their own line of sight. The solution to the problem is derived as (L+l)/l, where L is the distance between the mirrors and l is the distance from the lower mirror to the observer's eye. The conversation encourages visualizing the mirrors as windows to simplify understanding. Overall, the thread provides a clear mathematical approach to optimizing mirror widths for effective periscope design.
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Homework Statement


A periscope is made of two good mirrors. Find the ratio of the minimum widths of the mirrors if the distance between them is L and the distance from the lower mirror to the eye of the observer is l.The objects viewed through the periscope are at a great distance from it.


Homework Equations





The Attempt at a Solution


We can straighten the tube and consider a single straight tube because the function of the mirror is only to deviate the path of rays so that the object at higher position can be seen from lower position.
The answer to this question is (L+l)/l. Explain the solution of this question.
 
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hi ananya17! welcome to pf! :smile:

pretend that they're windows :wink:​
 
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