Question

Three flat mirrors are arranged mutually perpendicular to each other. The number of distinct images that will be formed due to a point object is?

• A. $6$
• B. $7$
• C. $12$
• D. None of these

Answer 1

Answer: (B)

$7$

7
Images formed between any 2 mirrors is: $\frac{360}{\theta }-1$
Hence, 3 images between 2 mirrors, which are along the sides. These 3 images form 3 images on the top, and the original body forms one on top.
∴∴ Total images=3+3+1=7