Concept:A periscope uses two plane mirrors to reflect light so the observer can see over an obstacle.
Explanation:In a periscope, the two mirrors are placed at an angle of
45∘ to the horizontal axis.
Because both mirrors are inclined at the same
45∘ angle, they are parallel to each other.
When light hits the upper mirror, it reflects vertically downward toward the lower mirror.
The lower mirror then reflects the light horizontally into the observer’s eye.
This setup allows the observer to see objects that are not in a direct line of sight.
The periscope works on the principle of reflection of light.
It is commonly used in submarines and armoured vehicles.
Answer:The two plane mirrors are kept
parallel to each other.
