Question

1. These objects does not allow light
to pass through them.
2. It travels in straight line.
3. It is a device to see hidden
corners.
4. This device uses reflection to
create beautiful picture.
5. These object allows light to pure
fully
6. These objects allow the light to
pure partially
7. It is formed when objects come in the path of light​

Answer 1

Answer:

The object you were asking for is PERISCOPE.