Optics Question 523
Question: A person is in a room whose ceiling and two adjacent walls are mirrors. How many images are formed
[AFMC 2002]
Options:
A) 5
B) 6
C) 7
D) 8
Show Answer
Answer:
Correct Answer: C
Solution:
The walls will act as two mirrors inclined to each other at $ 90{}^\circ $
and so will form $ ( \frac{360}{90}-1 )= $ 4 ? 1 i.e. 3 images of the person.
Now these images with person will act as objects for the ceiling mirror and so ceiling mirror will form $ 4 $ images further.
Therefore total number of images formed $ =3+3+1=7 $
Note : He can see. $ 6 $ images of himself.
