A Periscope is an optical instrument used in submarines to observe objects on the surface of water while remaining submerged. It works using a system of mirrors or prisms that reflect light down a tube, allowing the viewer to see over obstacles or around corners.
The instrument used in a submarine to see the object in the surface of water is:
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Question context
This question is part of ⚙️ Mechanical Eng within the broader 🛠️ Engineering Essentials subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.