A _____ is used in submarines to monitor the surface of water.
Everyday Science / Basics of Every Day Science EDS — Multiple-choice practice
آبدوزوں میں پانی کی سطح کی نگرانی کے لیے ایک _____ استعمال کیا جاتا ہے۔
- A. Telescope
- B. Binoculars
- C. Kaleidoscope
- D. Periscope
Correct answer
Periscope
Explanation
Explanation A Periscope is an optical instrument used to observe objects that are not in direct line of sight. Such as monitoring the surface of the water from a submarine.
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