2020 · Q10
In a periscope, the two plane mirrors are kept
General KnowledgePhysics
- Aparallel to each other.
- Bperpendicular to each other.
- Cat an angle of 60° with each other.
- Dat an angle of 45° with each other.
Explanation
In a periscope the two plane mirrors are parallel to each other, each inclined at 45 degrees to the axis of the tube so that light reflects twice through a total of 180 degrees. If the mirrors were at 45 degrees to each other (option D) they would not be parallel and the periscope would not transmit the image. Hence A.