PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A periscope uses two identical plane mirrors, each inclined at 45∘ to the horizontal. A ray of light travels horizontally towards the first mirror. After two successive reflections, the emergent ray will move
(a) vertically downward.
(b) at 45∘ to the horizontal.
(c) horizontally, parallel to the incident ray but displaced.
(d) horizontally, opposite to the incident direction.