what is the working principle of a periscope?
Dear Student
Kindly look at the given figure showing a very basic image of periscope.
![](https://s3mn.mnimgs.com/img/shared/userimages/mn_images/image/14_12_8.png)
Because of these properties a periscope can be easily used at a concealed position like a submarine.A sailor inside can easily see outside using a periscope, even if the submarine is actually below the surface of water.
Regards