Question

If an object is placed symmetrically between two plane mirrors, inclined at an angle of ${72}^0$, then the total number of images formed is:

• A. 5
• B. 4
• C. 2
• D. Infinite

Answer 1

The correct option is B 4

The angle between the two mirrors, $\theta ={72}^0$

So, number of images formed: $n=\frac{360}{\theta }-1=\frac{360}{72}-1=5-1=4$

$4$ images will be formed.