Multiple choice

For seeing objects at the surface of water from a submarine under water, the instrument used is

  1. kaleidoscope

  2. periscope

  3. spectroscope

  4. telescope
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A periscope uses mirrors or prisms to allow an observer to see objects that are not in their direct line of sight, which is essential for submarines to view the surface while remaining submerged.

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