Question

A person is in a room whose ceiling and two adjacent walls are mirrors. How many images are formed :

• A. $5$
• B. $6$
• C. $7$
• D. $8$

Answer 1

The correct option is C $7$

The wall will act as two mirrors inclined to each other at $90°$ and so will form $\frac{360°}{90°}-1=3$ images of the person.

Three images by walls now these images with object (person) will act as objects for the ceiling mirror and so ceiling will form $4$ $images$. Hence total no. of images formed$=3+4=7$