Question

Two mirrors are placed as shown below. How many images of object O will be formed?

• A. 6
• B. 5
• C. 7
• D. None of these

Answer 1

The correct option is B 5

For two plane mirrors inclined at an angle
No. of images =n, if n is odd
=n-1, if n is even
$Where,n=\left(\frac{360}{\theta }\right)$
$\theta$ is the angle between the mirrors.
$So,n=\left(\frac{360}{60}\right)$ = $6(as\theta ={60}^{\circ })$
As n is even,
So, no: of images of object O to be formed = (6-1) = 5