PHYSICS · Subjective · CBSE · Physics · Light: Mirrors and Lenses · Light: Mirrors and Lenses
Problem
A periscope uses two identical plane mirrors, each inclined at 45∘ to the vertical. A ray of light travels horizontally towards the upper mirror, reflects from it, strikes the lower mirror, and reflects again.
(a) What is the angle between the emergent ray and the original incident ray?
(b) Does the observer see the final image as erect or inverted?