Question

When the angle between two plane mirrors is ${30}^{\circ }$, how many multiple images will be formed by the mirrors?

• A. 11
• B. 12
• C. 5
• D. 13

Answer 1

The correct option is A 11

$\text{Formula to be used:}$ $n=\frac{{360}^o}{\theta }-1$, where $\theta$ is the angle between the mirrors.,

Here, the angle between two mirrors is $\theta ={30}^0$.

So, number of images formed is $n=\frac{{360}^o}{{30}^o}-1=11$