Question

Two plane mirrors are inclined at an angle of ${40}^{\circ }$.If an object is placed symmetrically between the mirrors, then number of images formed is

• A. $5$
• B. $6$
• C. $8$
• D. $7$

Answer 1

The correct option is C $8$

$n=\frac{{360}^{\circ }}{0}=\frac{{360}^{\circ }}{{40}^{\circ }}=9\text{[odd]}$

So, number of images formed $=9–1=8$