Question

An object is placed symmetrically between the two plane mirrors inclined at angle of ${30}^o$. Then the total number of images formed is:

• A. 12
• B. 2
• C. 11
• D. 15

Answer 1

The correct option is C 11

No. of image $=\frac{{360}^{\circ }}{\theta }–1$

$=12-1$
$=11$