what is a periscope
what does virtual mean
Hi @ Jyothi
Look at the given figure showing a very basic image of periscope.
A periscope is an instrument for observation from a concealed position. In its simplest form it consists of a tube with mirrors at each end set parallel to each other at an angle of 45°. Commonly periscope is used in submarines for viewing the surface of water.
Virtual is something that does not exist in real. For example, when you see an image in a plane mirror it seems to be in background of the mirror because the plane mirror forms a virtual image.
Hope this is clear to you.
Cheers!!
