- A simple periscope allows observation of objects located above or below the observer's direct line of sight. - It utilizes plane mirrors placed at angles to redirect light. - The change in direction of light upon hitting a mirror surface is called reflection.
Which one of the following is the natural phenomenon based on which a simple periscope works ?
Asked in UPSC NDA 1 2018 · Topic: Optics (Reflection and Refraction at plane and spherical surfaces)
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