Multiple choice

With which of following instruments can a sailor in a submarine see the objects on the surface of sea?

  1. Periscope

  2. Telescope

  3. Gyroscope

  4. Stereoscope

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A periscope uses mirrors or prisms to reflect light, allowing submarine sailors to view objects on the surface while submerged.