The Periscope's Blind Spot · AI Generator #GEN-59A3456F
Physics · optics
Problem
A submarine periscope consists of two plane mirrors arranged at 45° to the vertical, separated by a distance of 2.4m. The top mirror has dimensions 15cm×15cm and the bottom mirror (the eyepiece mirror) has dimensions 12cm×12cm. When looking through the periscope, an observer's eye is positioned 25cm directly below the center of the bottom mirror.
A small enemy ship appears as a point object on the horizon. What is the maximum horizontal distance from the periscope's vertical axis at which this ship can be positioned and still be visible to the observer?